ADU Regulations in Alabama: The Complete Guide

The beautiful state of Alabama boasts of coastlines, a diverse ecosystem of flora and fauna, and a rich history that together make Alabama a popular living choice. With the rise of tiny homes and ADU living across the country, many homeowners are now searching for answers regarding ADU regulations in Alabama. What better way to enjoy the natural beauty of Alabama than from the comfort of a luxurious ADU? 

While Alabama is not yet known for being very ADU-friendly, there are still several counties and local municipalities that allow their presence with varying restrictions and requirements. Keep reading to find out all the essential information pertaining to ADUs and Alabama regulations! If you are interested in modular ADUs, Zook Cabins offers multiple modern options for you.

Are ADUs Allowed in Alabama?

Yes and no. Alabama has no state-wide regulations for ADUs meaning approval for your modular ADU will vary depending on your local county. Each county and municipality has its own laws and restrictions on ADUs making it a complex research process. Some counties allow them through adopted International Residential Code (IRC) provisions or local ordinances and others require case-by-case zoning approvals. To build or own a detached ADU, you must always consult with your local building/zoning department. As soon as you’re ready for your ADU, reach out for a quote—we’d love to help.

What Is Considered An ADU in Alabama?

Different Alabama counties will have their own definition of an ADU but most municipal codes define an ADU as “A second dwelling unit that is either contained within the structure of a single-family dwelling unit or in a separate accessory structure on the same lot as the principal residential building for use as a complete, independent living facility with provisions within the accessory dwelling for cooking, eating, sanitation and sleeping. Such a dwelling is an accessory use to the principal residential building and includes accessory apartments, garage apartments and guesthouses.”  ADUs must have their own separate entrance and meet all the setback, utility, and lot size requirements to be considered a legal ADU. 

Can Park Model Tiny Homes Be Used As ADUs?

Again, the answer to this will vary depending on your local jurisdiction but yes, certain areas allow the use of park model homes as ADUs. A county like Baldwin County clearly allows for park model homes to be used as tiny homes and it may also allow them to be used as an ADU. Contact your local zoning department to get the specifics on your regulations. If you are interested in learning more about park model tiny homes, browse our wide selection to find one that fits your needs.

Want to see what the laws are for using tiny homes as an ADU? Check out this table below and get started.

AL	IL	MN	NC	TX
AZ	IN	MS	ND	UT
AR	IA	MO	OH	VT
CA	KS	MT	OK	VA
CO	KY	NE	OR	WA
CT	LA	NV	PA	WV
DE	ME	NH	RI	WI
FL	MD	NJ	SC	WY
GA	MA	NM	SD
ID	MI	NY	TN

 Request a quote when you’re ready to begin your ADU journey, and we’ll be glad to support you.

Can Log Cabins Be Used As An ADU?

Yes, certain counties allow log cabins to be used as an ADU as long as they comply with the local residential zoning requirements and building codes. Just like park model homes and other structures, modular log cabins must also follow the setback and square footage limits. For specifics, contact your local zoning department. Once you’re ready to build your ADU, request a quote and we’ll be happy to assist.

Can Modern Cabins Be Used As An ADU?

Modern cabins are the same as modular log cabins: permitted when they meet local definitions of permanent residences and constructed as per building codes. Due to the larger size of modern cabins, not all models will fit the size limitations of ADUs, but certain models like the Woodland or the Two Pines may fit the bill. 

What is the Difference Between a Prefab ADU & a Modular ADU?

These two popular ADUs are similar but differ in how they are delivered and built. Prefab ADUs are built entirely off-site and delivered as a single, finished unit while modular ADUs are built in sections and assembled on-site. Modular ADUs are still considered permanent residences once they are installed and are built to the standards of a single modular home.  Typically, local zoning departments do not require a distinction as long as both options meet the building requirements. 

Size & Placement Requirements 

What is the Minimum Size for an Accessory Dwelling Unit?

Typically around 200–400 sq ft, but many counties have no minimum so check with your local zoning. Junior units may be allowed under 500 sq ft where more regulations apply, like in Jefferson County where the maximum ADU size is 200 square feet. 

Can My ADU be Bigger Than My House?

No, your ADU can not exceed the size of your house and most Alabama counties that permit ADUs limit ADUs to a percentage (50–75%) of the primary home size. You’ll need to check your local code for the specific guidelines regarding ADU size. 

How Close To My House Can I Build An ADU?

The setback rules for ADUs are not outlined in a state-wide regulation which means your local county or municipality will have the specific requirements. However, generally speaking, detached ADUs often require 5-10 foot side/rear setbacks. Attached units generally follow the setbacks required for the main dwelling. 

Do You Need A Permit For An ADU in Alabama?

Yes. Regardless of the ADU type, an ADU requires a permit, which typically includes a building permit, electrical/plumbing permit, and local zoning plan reviews. Many counties in Alabama have adopted the 2021 International Residential Code (IRC), which requires ongoing inspections throughout construction and installation. 

Planning an ADU? When you’re ready, get a quote and we’ll be here to help.

Are There Any Incentives or Grants for ADUs in Alabama?

At present, no statewide grants exist for ADU construction but some local municipalities offer:

• Fee waivers
• Reduced permit costs
• Affordable housing incentives

It is essential to check your local building department regularly, as incentives may become available sporadically when funding becomes available. 

What Features are Included in An ADU from Zook Cabins?

There is a diverse array of ADU options to choose from, but each model from Zook Cabins offers: 

• A minimum of 500 square feet of living space 
• 1-2 full bedrooms 
• 1 full bathroom 
• A modern kitchen with all the necessary appliances 
• Climate-controlled interior 
• Luxurious modern design, fully finished and move-in ready 
• Customizable options for countertops, cabinetry, and tilework

Are Zook Cabin’s ADUs Built to Code?

Yes, each of our models are designed to meet or exceed local building codes. Throughout the building process, we take extra steps to ensure maximum quality. The modular ADUs require a permanent foundation, which can make it easier to comply with standard housing codes, depending on your local municipality’s regulations. Once you’re ready to build your ADU, request a quote and we’ll be happy to assist.

Can an ADU Have Multiple Bedrooms and Bathrooms?

Local municipalities can vary in their regulations which influence how many bedrooms you can have. For example, Jefferson County limits ADUs to 200 square feet, so a 1 bedroom would really be your only option. A county like Mobile County allows up to 1,000 square feet which would leave room for a 1 bedroom model like our Luna ADU or even a 2 bedroom model such as our beautiful Grove ADU. 

Are ADUs A Good Investment?

Absolutely! Accessory Dwelling Units can be an excellent stream of additional income through rental properties plus they can increase your home value. Their versatility and lower upfront costs make them an ideal choice for tiny home living, assuming your local county allows ADUs. In this video The Big Texan RV Ranch used several park models as cabin stays, which could be used as an ADU pending municipality approval.

What Are the Requirements for ADUs in Each County in Alabama?

Does Autauga County, Alabama, Allow ADUs?

Autauga County does not provide county‑wide ADU regulations in its public documentation. The ADU approval falls under the review of local jurisdictions, either cities, towns, or the county’s subdivision authority. If you’re in an incorporated area (like Prattville or Millbrook), they typically require an Accessory Dwelling Permit, with size limits around 200 sq ft minimum and up to 50% of the principal dwelling or 1,000 sq ft, plus standard setbacks and no separate utility meters In unincorporated parts of the county, building is managed via the Autauga County Engineer/Construction Management Division so you will need to seek further guidance through their department.  When you are ready to get your ADU request a quote, and we will be happy help you.

Does Baldwin County, Alabama, Allow Tiny ADUs?

Yes! Baldwin County is one of the more permissive Alabama counties and does allow ADUs that are governed through zoning regulations across multiple planning districts. For most residential zones (e.g., Districts 12, 19, 20, 22, 26, 29, 30, 32, 33), ADUS are permitted if they they do not exceed 60% of the square footage of the principal residence—and never exceed 1,200 sq ft in District 21 as outlined in their municipal code.  The ADU lots must follow typical minimum sizes (20,000 sq ft in B‑1 zones), and any accessory structures must maintain 5 ft side/rear setbacks, not occupy more than 30% of the rear yard, and cannot be placed in front yards. Parking requirements are subject to B‑1 mixed-use standards, meaning the sum of residential and commercial spaces with off-street parking per unit is required. For detailed plan review and utility hookups, contact Baldwin County Building Inspection. When you’re ready to move forward with your ADU, request a quote—we’re here to help.

Planning an ADU? When you’re ready, get a quote and we’ll be here to help.

Does Barbour County, Alabama, Allow ADUs?

As of now, Barbour County offers no explicit ADU guidelines at the county level. Permitting follows general IRC-based building rules overseen by city or municipal authorities. In unincorporated zones, approval for an ADU or tiny home is typically evaluated on a case-by-case basis through the Construction Management Division. If you’re inside a municipality (like Eufaula), they likely have ADU requirements already in their zoning codes. Ready to start your ADU project?

Does Bibb County, Alabama, Allow ADUs?

Like many other Alabama counties Bibb County does not include ADU language in its countywide code. If you are interested in building any sort of secondary unit (ADUs would fall into this category) you need to go through infrastructure reviews or subdivision inspections. If you’re within a city or town, however, their building or zoning department may have separate ADU provisions. Contact the Macon-Bibb County Planning and Zoning Commission to learn more. 

Does Blount County, Alabama, Allow ADUs?

Blount County itself has no ADU-specific rules for unincorporated areas; instead, building and zoning rely on the IRC administered through county inspectors. If you live in a municipality like Oneonta or Cleveland, check under “Accessory Dwelling” in their municipal zoning, as these codes often define ADUs with specific setbacks, size thresholds, and permit requirements. To find out more about the county-wide requirements, contact the Blount County Engineering Department. 

Does Bullock County, Alabama, Allow ADUs?

Currently, Bullock County does not feature ADU language in its publicly accessible building or planning documents. As a result, accessory or tiny home development typically follows IRC standards with inspections for structural, electrical, or plumbing compliance. Specific design or size rules may depend on your local town’s regulations so scroll further down to find out information on local municipalities. Or visit the Bullock County Planning and Zoning Department to find out more. 

Does Butler County, Alabama, Allow ADUs?

At the county level, Butler County lacks clarity on specific ADU guidelines. Without zoning authority in unincorporated areas, ADU and tiny home construction is dependent on Alabama state code compliance via the Construction Management Division. If you’re within town limits (such as Greenville or Georgiana), refer to their municipal building codes for more requirements.

Does Calhoun County, Alabama, Allow ADUs?

There are currently no specific ADU regulations at the county level for Calhoun County. Instead, any accessory dwelling must comply with standard IRC provisions for construction, including proper insulation, electrical, plumbing, and structural requirements. If you’re in a municipality like Anniston or Jacksonville, check your city’s zoning ordinances—they may cover ADU sizes (often capped between 600–800 sq ft), parking requirements (usually one space per unit), and setbacks (commonly 5 ft side/rear, 25 ft front). Visit the Calhoun County Government website to learn more information about ADU regulations. 

Does Chamber County, Alabama, Allow ADUs?

Just like the majority of Alabama counties, Chambers County offers no formal ADU policy in county documentation. ADU projects are likely permitted via standard building and code inspections, with approvals based on safety and utility connections. For local requirements on lot dimensions (e.g. 8,000 sq ft min), parking, or bedroom counts, consult the planning department of specific towns like LaFayette, Valley, or Lanett. Or contact the Chamber County Code Enforcement Department to inquire further. 

Does Cherokee County, Alabama, Allow ADUs?

Cherokee County does not list ADUs in their county ordinances; instead relying on IRC and building inspections to enforce ADU regulations. Municipalities such as Centre may allow ADUs under local zoning, often stipulating maximum unit size near 750 sq ft, minimum lot size around 10,000 sq ft, and one off-street parking space per unit. You can confirm by contacting city planning or building departments for the municipality you want to install your ADU in or by perusing the Cherokee County Commission website for more clarity. 

Does Chilton County, Alabama, Allow ADUs?

Chilton County itself lacks an ADU-specific ordinance and ADU proposals are processed under standard building permit protocols with review of structural and utility compliance. Residents should inquire within towns like Clanton or Jemison, where municipal codes may establish size maximums (typically 500–800 sq ft) and regulate placement (e.g., 10 ft from property lines). Chilton County also offers an option to contact the local government for any further questions. Ready to start your ADU project? Get a quote and let us assist you.

Does Choctaw County, Alabama, Allow ADUs?

Unfortunately, Choctaw County contains no articulated ADU regulations in unincorporated areas. Certain cities with Choctaw County do allow ADUs with certain restrictions. If you live in Choctaw County, contact your local municipality’s building/zoning department to find out the specific regulations or visit the Choctaw County official website to find out more. 

Does Clarke County, Alabama, Allow ADUs?

Clarke County does not specify anything about ADUs in county-level zoning or building codes, leaving it unclear what the county standard is. As usual in Alabama, any accessory home construction defaults to compliance with IRC. Your local municipality building department can offer you further guidance on ADU regulations. 

Does Clay County, Alabama, Allow ADUs? 

Clay County offers no public ADU definitions or policies, but unincorporated areas follow the IRC permit process. Those interested in developing an ADU should consult municipal codes of towns like Ashland for details on site requirements, parking rules, and maximum allowable square footage typically capped between 600 and 900 sq ft. Clay County also offers information on their zoning ordinances, which may include clarity on ADUs.

Does Cleburne County, Alabama, Allow ADUs? 

There are currently no defined ADU regulations for Cleburne County  in its zoning or permitting ordinances. Unincorporated areas may approve ADUs on a case-by-case basis depending on septic and road access. Cleburne County offers further zoning guidance on their official website. 

Does Coffee County, Alabama, Allow ADUs? 

Coffee County does not publish ADU-specific regulations or any zoning restrictions for unincorporated areas within the county lines. Instead, any detached or secondary dwelling must pass through standard permitting under IRC guidelines at the local level. Certain local municipalities within Coffee County do allow ADUs with certain permits and restrictions, making it best for you to contact your local zoning department for the most clarity. 

Does Colbert County, Alabama, Allow ADUs?

Colbert County currently provides no specific ADU ordinance, leaving most development guidance to state building code compliance. If you’re located in Muscle Shoals, Sheffield, or Tuscumbia, municipal zoning ordinances may apply. These typically define ADUs as accessory residential units under 800–1,000 sq ft, with on-site parking, utility tie-in to the main residence, and occupancy limits. The county office can be contacted at (256) 386-8501 for more information.

Does Conecuh County, Alabama, Allow ADUs?

Conecuh County does not regulate ADUs directly. Permits for any secondary structures require adherence to health department codes, especially regarding septic systems and lot drainage. Incorporated towns such as Evergreen may have municipal zoning that allows backyard cottages or converted garages, but likely with minimum setbacks (10–15 ft), height restrictions, and limits to one bedroom.

Does Coosa County, Alabama, Allow ADUs?

Coosa County does not offer explicit guidance on accessory dwellings. Most ADU-related decisions fall to county inspectors and the health department. There is no known zoning in place for unincorporated areas, which may allow more flexibility, but also greater scrutiny on case-by-case review. If inside a city or town, reach out to the local clerk or visit the Coosa County Commission for county-wide questions. 

Does Covington County, Alabama, Allow ADUs?

Covington County does not list ADUs as a defined structure in its county code, but detached living units can sometimes be approved through standard permitting. Within cities like Andalusia or Opp, you may find ADU rules requiring a shared driveway, maximum unit sizes under 700 sq ft, and a permanent foundation. Separate meters for utilities may not be permitted due to county regulations, but the Covington County Commission Office may be able to answer specific questions you have. 

Does Crenshaw County, Alabama, Allow ADUs?

Following the pattern of many Alabama counties, Crenshaw County has no formal ADU zoning ordinance. Secondary dwelling units may still be allowed if they meet building code standards and pass health inspections. For unincorporated properties, county approval may hinge on road access and utility extension to the ADU.

Does Cullman County, Alabama, Allow ADUs?

Cullman County does not have explicit ADU regulations in unincorporated areas, but accessory structures are commonly permitted with building inspections and health department approval, particularly for water and septic systems. Short-term rentals may be restricted in some county zones.

Does Dale County, Alabama, Allow ADUs?

Dale County does not publish standalone ADU ordinances but allows accessory structures through normal permitting channels. Detached garages converted to dwellings may need architectural review. Contact the Dale County Commission for more information about ADU regulations. 

Does Dallas County, Alabama, Allow ADUs?

Dallas County does not specify ADUs in their county regulations, and development rules vary by location. The City of Selma—being the largest municipality—may allow ADUs in some residential areas, often capped at 800 sq ft, requiring one parking space, and typically requiring the ADU to match the architectural style of the main house. On the other hand, approval in rural zones depends on the lot size and septic capacity. Visit the local county office to inquire further. 

Does Dekalb County, Alabama, Allow ADUs?

DeKalb County does not outline specific zoning for ADUs, and approvals for secondary structures are routed through building inspectors and the county health department. If you’re in Fort Payne or Rainsville, local zoning may allow detached ADUs under R-1 or R-2 residential use, with maximum size thresholds of 750–900 sq ft, shared driveways, and one bathroom and kitchen required. Utility hookups must be permitted through the main house in most cases. Call the Dekalb County Office to ask about specific ADU regulations. 

Does Elmore County, Alabama, Allow ADUs?

Yes! Elmore County permits ADUs under certain conditions, especially in unincorporated or agriculturally zoned areas. While no comprehensive ADU policy is posted, properties often must meet minimum lot size standards (1 acre or more for separate septic systems), and the ADU must be no larger than 50% of the main house’s size. Local towns like Wetumpka and Millbrook may enforce zoning that requires architectural similarity to the main residence and limits on number of bedrooms (typically one or two max). The County Office is able to offer further guidance on specific ADU regulations. We’re here to help—just request a quote when you’re ready to begin your ADU.

Does Escambia County, Alabama, Allow ADUs?

Escambia County does not list ADUs as a zoning category, but detached dwellings may be allowed in agricultural or rural zones if they meet IRC building standards, and health codes for waste and water. Some city zoning boards may allow garage apartments or backyard cottages under conditional use permits, often with parking requirements and size limits around 600–700 sq ft. As always, check with the county office for specific requirements. 

Does Etowah County, Alabama, Allow ADUs?

Etowah County does not specifically regulate ADUs, but accessory living units are generally processed like other residential permits. A maximum of one ADU per property is standard in certain municipalities within Etowah County. 

Does Fayette County, Alabama, Allow ADUs?

Fayette County does not outline explicit ADU regulations, and zoning policies in unincorporated areas are minimal. Secondary dwellings may be permitted if they comply with state building code and local health department septic standards. In the City of Fayette, zoning ordinances may allow accessory units with maximum sizes around 600–800 sq ft, and restrictions on separate utility meters or short-term rentals.

Does Franklin County, Alabama, Allow ADUs?

Franklin County does not have ADU-specific policies in place. However, detached garages or guest cottages may be allowed under residential or agricultural use provided they follow IRC standards, and meet environmental health requirements. The Franklin County Development Authority can answer your questions about how your ADU might fall into one of these categories. 

Does Geneva County, Alabama, Allow ADUs?

Geneva County does not provide published ADU regulations, but rural zoning is typically more permissive. ADUs might be allowed on larger lots if they don’t interfere with septic systems or encroach on easements. Inside city limits—such as Geneva or Samson—ADUs may require a special use permit and be limited to one-bedroom units with no more than 800 sq ft. Attached units are sometimes preferred over detached ones.

Does Greene County, Alabama, Allow ADUs?

Greene County does not define ADUs in its publicly available codes. Development is generally regulated at the municipal level or based on individual review by the county building office. In Eutaw or Forkland, accessory structures may be allowed if they’re non-commercial, attached to or near the main dwelling, and meet standard property setbacks. Approval usually depends on available utilities and lot configuration and questions can be directed to the Greene County Commission. 

Does Hale County, Alabama, Allow ADUs

Hale County lacks detailed zoning or building codes for ADUs in unincorporated areas. However, secondary residences may be permissible if the lot is large enough for dual septic systems or expanded utilities, often requiring a 1-acre minimum. Since Hale County does not have a dedicated zoning, building, or planning department, it is best to contact your local building department. 

Does Henry County, Alabama, Allow ADUs?

Henry County does not provide an official ADU ordinance, but rural parcels often allow for secondary dwellings if they meet building and sanitation codes. The towns of Abbeville and Headland may approve detached ADUs through their planning commissions, often requiring maximum size limits (under 1,000 sq ft), rear or side yard placement, and no subdivision of the lot or utilities. Off-street parking is generally required.

Does Houston County, Alabama, Allow ADUs?

Houston County offers more defined guidance on ADUs. In Dothan, ADUs are permitted in R-2 and higher zones with rules such as: maximum size of 800 sq ft, one ADU per lot, must be located behind the primary dwelling, and one off-street parking space required. Units must match the primary residence’s appearance and cannot be sold separately. Houston County permits vary outside city limits, but typically follow similar rules. To find out more, contact the Road and Bridge Department which handles building permits. 

Does Jackson County, Alabama, Allow ADUs?

Jackson County does not publish specific ADU guidelines. However, in unincorporated areas, accessory buildings like guest homes or cabins are often allowed if they meet health department regulations and are used non-commercially. In the City of Scottsboro, ADUs may be allowed in residential zones, usually with limits of 700–900 sq ft, one bedroom, and a requirement that the unit is clearly secondary to the primary home in design and placement.

Does Jefferson County, Alabama, Allow ADUs?

Jefferson County (home to Birmingham) has more developed zoning ordinances. ADUs are allowed in some residential zones—particularly in Birmingham, Homewood, and Mountain Brook, with a maximum square footage of 200 sq ft. Each city within the county sets slightly different requirements, so homeowners must check with their local planning department. The Building Division also offers guidance on ADU regulations. 

Does Lamar County, Alabama, Allow ADUs?

Lamar County does not have centralized ADU policies. Secondary structures may be approved on larger lots if septic systems allow, and standard IRC building codes are followed. In Vernon, the largest city in the county, ADUs might be allowed by special permit in residential zones but are not addressed directly in municipal code. Prospective builders should contact the city clerk or building inspector for case-by-case decisions, since there is no county website. 

Does Lauderdale County, Alabama, Allow ADUs?

Lauderdale County—including the City of Florence—does allow ADUs under certain zoning classifications. The county does not restrict ADUs specifically, though permits and septic approval are still required for detached dwellings in rural areas. Additionally, Lauderdale County lacks a website and official building department, so you must contact your local zoning department for further questions.

Does Lawrence County, Alabama, Allow ADUs?

Lawrence County does not specify ADUs in its public-facing regulations. In unincorporated areas, residents often rely on state codes and septic approval for guest homes. The City of Moulton may allow accessory dwellings with limits on size (700–900 sq ft), number of bedrooms (1–2), and setbacks from lot lines (typically 5–10 ft minimum). Separate utility connections are not guaranteed unless approved by the utility board.

Does Lee County, Alabama, Allow ADUs?

Lee County allows accessory dwellings in rural and suburban zoning districts, particularly in unincorporated areas. In Auburn and Opelika, ADUs are regulated through local ordinances and may be more restrictive. For example, Auburn limits detached ADUs to certain zones and requires design compatibility and architectural review. The Building Inspections Department can offer guidance on the next step. 

Does Limestone County, Alabama, Allow ADUs?

Limestone County’s approach to ADUs is mixed. In unincorporated areas, ADUs are often allowed on larger lots with proper utility access. However, in other incorporated areas, zoning laws prohibit ADUs. For more clarity, contact the County Commission Office. 

Does Lowndes County, Alabama, Allow ADUs?

Lowndes County does not have explicit ADU zoning ordinances. The county has a very rural character, and land use tends to be more flexible. Secondary homes may be allowed if they comply with Alabama state building code, and pass septic system and utility capacity reviews. There is no posted maximum ADU size, but building departments may limit it based on lot coverage or primary structure square footage. Residents are encouraged to check with the county office before building.

Does Macon County, Alabama, Allow ADUs?

Macon County has no formal ADU policy available, and land use decisions are often made on a case-by-case basis. In rural zones, small detached dwellings (like cabins or guesthouses) may be permitted if they are clearly accessory in use and conform to health and safety standards.  Each case will be reviewed by the local planning board and specific questions should be directed to the Macon County Compliance Office. 

Does Madison County, Alabama, Allow ADUs?

Madison County, home to Huntsville, does permit ADUs in certain areas, especially under the city’s zoning ordinance. Unincorporated Madison County may allow ADUs on lots 1 acre or larger, though a permit and septic approval are needed. Without the presence of a dedicated county building and zoning department, it is good to check with the planning or building department in your municipality. 

Does Marengo County, Alabama, Allow ADUs?

Marengo County does not provide specific guidance on ADUs in public zoning or planning documents. In unzoned areas, small accessory buildings may be allowed as long as they are non-commercial, subordinate, and meet building and septic codes. In Demopolis, accessory structures may be allowed by variance or conditional use permit. Common restrictions include a maximum of 2 occupants, size limits under 900 sq ft, and no separate mailing address or utility meter. There is no official zoning or planning department, but the County Commission can field your questions and provide more clarity. 

 Does Marion County, Alabama, Allow ADUs?

Marion County offers no official regulations addressing ADUs directly. In rural parts of the county, tiny homes or modular accessory units are often permitted if they meet construction and utility requirements. In the City of Hamilton, ADUs may be allowed on a limited basis through the planning commission. These approvals typically require a minimum lot size of 10,000 sq ft, rear placement, and no use as a short-term rental. Separate driveways are discouraged.

Does Marshall County, Alabama, Allow ADUs?

Marshall County allows ADUs in some rural zones, although there are no unified ADU standards. In the City of Guntersville, ADUs are addressed in the zoning ordinance and further municipality guidelines are given in our article further down. Other municipalities like Boaz and Albertville may have more restrictive codes and require conditional use approval for ADUs.

Does Mobile County, Alabama, Allow ADUs?

Yes! Mobile County and the City of Mobile permit ADUs in select residential districts. According to Mobile’s Unified Development Code:

• ADUs are allowed in R-1 and R-2 zones
• Size limit: 800–1,000 sq ft or 40% of primary structure
• One ADU per lot
• Must match architectural style of primary home
• Requires one off-street parking space
• ADU may not be sold separately or used as a short-term rental
  In unincorporated Mobile County, ADUs must meet health, building, and site development codes, and require a building permit.
  
  Get your ADU started by requesting a quote—we’re happy to guide you every step of the way.
  

Does Monroe County, Alabama, Allow ADUs?

Monroe County does not provide detailed county-wide ADU regulations. Within cities like Monroeville, local ordinances may allow ADUs in residential zones with conditions such as a maximum unit size of around 700–900 sq ft, one off-street parking space, and setback requirements of at least 5 feet from property lines. Separate utility meters are usually not permitted without special approval.

Does Montgomery County, Alabama, Allow ADUs?

Montgomery County, including the City of Montgomery, has more developed ADU policies. In the city, ADUs are permitted in several residential zoning districts, such as R-1 and R-2, with specific regulations. Unincorporated areas of Montgomery County may have more flexible rules but must adhere to building codes and permit regulations.

Does Morgan County, Alabama, Allow ADUs?

Morgan County does not have comprehensive county-level ADU regulations. In cities like Decatur and Hartselle, local ordinances permit ADUs in residential zones, often with restrictions:

• Maximum unit size typically ranges from 600 to 900 sq ft.
• Setbacks of at least 5 feet from side and rear property lines are common.
• Parking requirements usually include at least one off-street space.
• ADUs must be subordinate in size and appearance to the main dwelling.

Does Perry County, Alabama, Allow ADUs?

Perry County does not have specific ADU regulations. Development of accessory dwellings generally depends on compliance with state building codes and health department standards for septic and water services. Municipalities within Perry County may have their own rules, but no standardized policies are publicly available. For any accessory structures, setbacks and lot size are evaluated case-by-case. Reach out to the Perry County Commission Office for any further questions. 

Does Pickens County, Alabama, Allow ADUs?

At this time. Pickens County has no formal ADU regulations documented. Building and zoning approvals for secondary dwellings are handled via standard IRC code enforcement and health inspections. Within towns such as Carrollton, accessory units may be allowed with conditions including lot size minimums, parking provisions, and adherence to setback requirements. Specific size limits are generally around 600–800 sq ft. Reach out to the Pickens County Commission Office for any further questions. 

Does Pike County, Alabama, Allow ADUs?

Pike County lacks explicit ADU ordinances in county code. Detached accessory dwellings may be approved through normal permitting if they meet building and sanitation codes. Troy, the county seat, may permit ADUs under residential zoning with size limits near 800 sq ft, requirements for parking, and restrictions on separate utilities. Setbacks typically follow standard zoning lines of 5 to 10 feet.

Does Randolph County, Alabama, Allow ADUs?

Randolph County does not have defined ADU standards at the county level. Accessory dwelling approvals are usually contingent on meeting state building codes and health department regulations. In towns such as Roanoke and Wadley, ADUs may be allowed in residential districts with conditions including size caps (usually 700–900 sq ft), one off-street parking space, and rear yard placement. Permitting is done on a case-by-case basis. Without a dedicated building department for the county, questions should be directed to the county office website. 

Does Russell County, Alabama, Allow ADUs?

Russell County does not have explicit county-wide ADU regulations. In general, accessory dwellings must comply with Alabama building codes and health department requirements. The City of Phenix City permits ADUs in residential zones with size limits typically around 800–1,000 sq ft, requires one off-street parking space, and enforces setback requirements of at least 5 feet. Separate utility connections are usually not allowed without special permission.

Does Saint Clair County, Alabama, Allow ADUs?

Following suit with many other Alabama counties, Saint Clair County does not have formal ADU regulations listed at the county level and accessory dwelling approvals are generally managed through municipal ordinances or state building codes. The City of Pell City allows ADUs in certain residential zones, with maximum sizes usually limited to 700–900 sq ft, requirements for one off-street parking space, and location restrictions to rear or side yards. 

Does Shelby County, Alabama, Allow ADUs?

Shelby County has adopted more progressive ADU regulations, especially in municipalities like Hoover and Pelham. ADUs are allowed with the following typical requirements:

• Maximum size of 800–1,200 sq ft or up to 50% of the main dwelling size
  
• One ADU per lot
  
• Located behind or attached to the main house
  
• One off-street parking space per ADU
  
• ADUs must comply with architectural standards to match the main dwelling
  Unincorporated Shelby County may have similar regulations but should be confirmed with the county planning department.

Does Sumter County, Alabama, Allow ADUs?

Sumter County does not have specific ADU ordinances. Accessory dwellings may be allowed if they meet state building and health codes. Municipalities like Livingston might allow ADUs with permits, requiring compliance with lot size, setback, and parking standards. Size limits typically range between 600 and 800 sq ft, and ADUs must be subordinate to the primary dwelling. Visit the zoning department in your municipality for more clarity.

Does Talladega County, Alabama, Allow ADUs?

Talladega County offers no explicit ADU regulations at the county level. In cities like Talladega and Lincoln, ADUs may be permitted in residential zones subject to size restrictions (usually up to 900 sq ft), placement in rear or side yards, and compliance with parking and setback requirements. Building permits and health department approvals are required and questions should go through the Permits, Building, and Development Department. 

Does Tallapoosa County, Alabama, Allow ADUs?

Tallapoosa County does not provide specific ADU policies. Accessory dwellings may be allowed in rural areas if they meet state building codes and health standards. In Dadeville and Alexander City, municipalities may permit ADUs with limits such as 700–900 sq ft, one off-street parking space, and no separate utility meters without approval. Setback rules typically require at least 5 feet from property lines.

Does Tuscaloosa County, Alabama, Allow ADUs?

Tuscaloosa County permits ADUs in some residential zones, especially within the City of Tuscaloosa. Outside city limits, county regulations are less detailed but require compliance with building and health codes.

Does Walker County, Alabama, Allow ADUs?

Walker County does not maintain specific ADU regulations at the county level. In unincorporated areas, accessory dwelling units must comply with standard building codes and septic requirements. Municipalities such as Jasper may allow ADUs under residential zoning districts with rules including maximum unit sizes around 800 sq ft, required setbacks of 5-10 feet, and one off-street parking space per unit. There is not an official zoning or building department to regulate ADUs so contact your local offices for more information. 

Does Washington County, Alabama, Allow ADUs?

Washington County lacks specific county-wide ADU ordinances. Generally, accessory dwellings must comply with state building codes and health department rules. In the City of Chatom, ADUs may be permitted under conditional use permits with size limits typically under 700 sq ft, and parking and setback requirements consistent with residential zoning. The official county website may offer further direction on ADU regulations. 

Does Wilcox County, Alabama, Allow ADUs?

Wilcox County does not have defined ADU regulations publicly available. Accessory units are typically reviewed on a case-by-case basis by county building officials, with emphasis on compliance with IRC codes and health department approvals. In towns like Camden, ADUs may require special permits with size and placement restrictions. Because Wilcox County does not have a county building department, you will need to check with your local zoning department. 

Does Winston County, Alabama, Allow ADUs?

Winston County does not have formal ADU ordinances at the county level. Unincorporated areas follow state building codes and health regulations for accessory dwellings. Municipalities such as Double Springs may permit ADUs with restrictions on size (usually under 800 sq ft), location behind the main dwelling, and parking requirements. Contact the building department in your local municipality for more information. 

Find Your Accessory Dwelling Units Requirements in Alabama By Municipality

This table provides an overview of publicly available building information as of 2025. However, zoning ordinances are subject to change so it is advised to contact your local planning or building department to confirm the current ADU requirements before building or buying. 

Alabama Municipality ADU Regulations
Municipality	Department Link
Addison	Town of Addison
Andalusia	Andalusia Planning & Dev
Aliceville	Aliceville Building Code Info
Anniston	Anniston Building Department & City Codes
Ashland	Ashland City Codes
Ashville	Ashville Building & ZoningAshville Ordinances
Athens	Athens Building
Bakerhill	Contact City of Bakerhill Town Hall at 334-616-6888
Bay Minette	Planning & Development Services Department
Birmingham	Planning & Zoning
Brewton	City of Brewton Zoning
Butler	Code of Ordinances
Camden	Alabama-Tombigbee Regional Commission
Chatom	Chatom Zoning Ordinance
Clanton	Building and Zoning
Centre	Centre City Office
Centreville	Centreville City Building Department at 205 926‑6416
Columbiana	Call Planning and Zoning Commission at 205 669‑5512
Cullman	Cullman County Planning and Zoning
Dadeville	Building Department
Decatur	Decatur Building Department
Demopolis	Building Department
Dothan	Dothan Planning & Development
Double Springs	Town Clerk: Call 205 489‑5016 (no direct website)
Elba	Building Code info via City Hall: Call 334 897‑2404 for code & permit questions
Enterprise	County Website
Eutaw	Building & Code Enforcement: Contact City Hall at (205) 372‑3535
Evergreen	City office (no online info) – Call (251) 578‑1810 for building department referrals
Fayette	Fayette Planning & Zoning Commission
Florence	Florence Building DepartmentFlorence Codes
Fort Deposit	Fort Deposit Zoning Ordianance
Fort Payne	Fort Payne Inspections & Zoning DepartmentFort Payne Building Code
Gadsden	Gadsen Building DepartmentGadsen Building Code Information
Geneva	Geneva Building DepartmentGeneva Building Code
Greensboro	Greensboro Services
Greenville	Greenville Building Department
Guntersville	Guntersville Building DepartmentGuntersville Adopted Codes
Gulf Shores	Gulf Shores Building DepartmentGulf Shores Building Codes
Hamilton	Hamilton Ordinances
Heflin	Heflin City ClerkHeflin Building Regulations
Hoover	Hoover Inspection ServicesHoover Building Codes
Huntsville	Huntsville Building & Construction ServicesHuntsville Building Code
Jackson	Jackson Public WorksJackson Zoning Ordinance
Jasper	Jasper Building Inspections
LaFayette	Lafayette Street, Sanitation, & Cemetery Department
Livingston	Livingston Zoning
Luverne	Luverne City Clerk
Marion	Marion Governing Body
Millport	Millport Citizen Questions
Mobile	Build Mobile
Montgomery	Montgomery Inspections Department
Moulton	Moulton Building Department
Northport	Northport Planning & Inspections
Oneonta	Oneonta Building Inspections & Permits
Opelika	Opelika Building Inspection DivisionOpelika Code Compliance
Ozark	Ozark Inspection Department
Pell City	Pell City Planning & Zoning Department
Phenix City	Phenix City Building Department
Prattville	Prattville Planning & Development DepartmentPrattville Adopted Building Codes
Rockford	Rockford Contact
Russellville	Building, Licensing, & Zoning
Scottsboro	Scottsboro Building Department
Selma	Selma Planning Commission
Talladega	Talladega Planning Commission
Troy	Troy Planning & Community Development
Tuskegee	Buildings, Codes, & Inspections Division
Union Springs	Union Spring Ordinances
Wadley	Call the Town Office at (256) 395-2261
Warrior	Warrior Permits
Wetumpka	Wetumpka Planning Commission

Does Abbeville, Alabama, Allow ADUs?

Yes! Abbeville allows ADUs that are subject to local zoning and building codes. ADUs typically must be subordinate in size to the main dwelling, often capped around 700–900 sq ft, with setbacks of 5–10 feet and at least one dedicated off-street parking space. Permits are required through the town’s planning or building office. For details, see the Abbeville Code of Ordinances.  When you’re ready contact us for a quote and we will be happy to get you the help you need.

Does Addison, Alabama, Allow ADUs?

Addison’s municipal codes do not explicitly mention ADUs; however, accessory structures that meet building codes and zoning setbacks may be permitted. Interested parties should contact the Town of Addison for current policies and permit requirements.

Does Andalusia, Alabama, Allow ADUs?

Andalusia permits ADUs within specific residential zoning districts. Typically, these units must be no larger than 800 sq ft, maintain rear or side yard placement, and provide one off-street parking space. Utilities must generally tie into the main residence. The Andalusia Planning & Dev Department offer the most up-to-date requirements.

Does Aliceville, Alabama, Allow ADUs?

Sometimes. Aliceville often allows accessory dwellings with conditional approval, requiring compliance with local building and zoning codes. Maximum size often ranges between 600–800 sq ft, with standard setbacks and parking rules. For permit applications and building codes, refer to Aliceville Building Code Info. 

Does Anniston, Alabama, Allow ADUs?

Anniston’s ordinance codes may allow detached or attached units in residential zones, with size limits of 800–1,000 sq ft or 50% of the primary dwelling, whichever is smaller. The City Codes are unclear if these attached or detached units are able to be dwelling places or simply storage units. The Anniston Building Department & City Codes can provide more clarity. 

Does Ashland, Alabama, Allow ADUs?

Ashland only permits ADUs on conditions that they are attached and not designed for independent living. The ADU must not exceed 500 square feet and can only be up to 25% percent the size of the primary dwelling. Contact Ashland’s municipal office for zoning and permitting info or look through the Ashland City Codes for more specific ADU information. 

Does Ashville, Alabama, Allow ADUs?

Ashville’s zoning ordinance allows accessory structures up to 750 square feet but it is unclear in the codes whether those structures can be used for dwelling purposes. Building permits and inspections are mandatory for any accessory structures. Contact the Building and Zoning Department or read through the zoning ordinances to find out more. 

Does Athens, Alabama, Allow ADUs?

No. The City of Athens does not allow ADUs for residential purposes. You are allowed to have an additional structure on your property but it can not be occupied by humans. The Athens Building Department and Adopted Codes have detailed guidance on permitting and construction standards.

Does Bakerhill, Alabama, Allow ADUs?

Bakerhill does not have explicit public ADU regulations listed but accessory dwellings may be allowed if they follow standard IRC building codes and zoning rules. Contact the town hall directly at 334-616-6888  for the most current information as there is limited online information. 

Does Bay Minette, Alabama, Allow ADUs?

Yes,it appears that Bay Minette specifies that accessory buildings are allowed in certain residential zones with requirements including a maximum size of 800 sq ft, placement in rear yards, and at least one parking space per unit. Check the Bay Minette Planning & Development Department for applications and regulations. When it’s time to take the next step on your ADU, reach out for a quote—we’re here for you.

Does Birmingham, Alabama, Allow ADUs?

Yes! Birmingham’s ADU policies are among the most detailed in the state. ADUs are allowed in multiple residential zones, with size limits generally set at 800–1,000 sq ft or 40–50% of the primary residence size. Requirements include owner occupancy, one off-street parking space, and architectural compatibility. The Department of Planning, Engineering, and Permits provides zoning maps and application procedures. Let us help with your ADU—request a quote when you’re ready to get started.

Does Brewton, Alabama, Allow ADUs?

Brewton permits ADUs with regulations specifying the ADU can not be more than one story high, and must not exceed 30% of the rear yard. Brewton also specifies that the ADU can not have a kitchen facility but can contain sleeping quarters.The Planning & Zoning Department enforces building and zoning codes related to accessory dwellings.

Does Butler, Alabama, Allow ADUs?

Butler does not mention anything about ADUs in their code of ordinances so it is necessary to contact the town through Butler Code of Ordinances or Town Council.

Does Camden, Alabama, Allow ADUs?

Camden does not maintain an official online building department website, so any information about ADUs is not publicly available. If Camden does allow ADUs, they would require building permits and must comply with IRC building codes. Contact the City Hall directly at 334-682-9428 for zoning and permit requirements.

Does Chatom, Alabama, Allow ADUs?

Chatom’s zoning ordinance and public code documents address general accessory structures like sheds or workshops but include no explicit language permitting their use as habitable living quarters (such as “Accessory Dwelling Unit,” “in-law suite,” or “secondary dwelling unit”) Since none of the ordinance sections authorize residential occupancy of accessory buildings, ADUs are not legally allowed in Chatom. For further clarification, you can request the full zoning PDF from Town Hall or contact the building/zoning office to inquire about upcoming changes or variance procedures.

Does Clanton, Alabama, Allow ADUs?

Clanton’s Building & Zoning Department oversees accessory structures, and while they provide design and permit guidelines, the city’s Zoning Ordinance Amendments do not include an ADU-specific section allowing people to live in accessory buildings. Therefore, although detached structures are permitted, they cannot be used as separate dwelling units. For confirmation or to explore possible variances, reach out to David Askew at the Building & Zoning Department for more help. 

Does Centre, Alabama, Allow ADUs?

Just like in Clanton and other counties, Centre’s zoning code permits accessory buildings such as sheds and guest garages but it stops short of authorizing them for residential use. There is no reference to “Accessory Dwelling Units,” “secondary suites,” or similar terms that allow someone to legally live in an accessory structure. As a result, ADUs are not currently allowed in Centre. Anyone considering one should reach out to the city’s Building Inspector or request the full zoning code to verify if a conditional use or variance could change that.

Does Centreville, Alabama, Allow ADUs?

Centreville has a very straightforward permitting process for accessory structures, but its municipal documents make no explicit mention of using those structures as living spaces. ADUs aren’t defined or allowed under current residential zoning. Interested homeowners should connect with the Permits & Forms Department to ask whether the code has been amended or if variances are possible for creating habitable units.

Does Columbiana, Alabama, Allow ADUs?

Columbiana allows accessory structures under residential zoning regulations, but again, these are limited to non-habitable uses like workshops or storage units. There’s no designation for ADUs or granny flats in the Planning & Zoning Commission’s guidelines. Until the zoning code is updated, ADUs are not permitted. To explore your options, you can contact the Planning & Zoning Commission to see if ADU-friendly legislation is under consideration.

Does Cullman, Alabama, Allow ADUs?

Yes! Cullman’s county planning documents permit accessory buildings, and within the city itself, there are targeted circumstances under an R‑2 zone where attached ADUs are allowed, and for detached units, a 10,000 to 15,000 sq ft lot minimum applies, along with a max size around 800 sq ft and one off-street parking spot. These provisions are outlined in Cullman County’s Planning & Zoning and Building Codes, but because they only exist in select areas, ADU installment is highly dependent on your zoning division.  Contact the Cullman County Planning & Zoning Department or City Building Inspector to review parcel-specific rules. Ready to bring your ADU plans to life? Request a quote and we’ll take it from there.

Does Dadeville, Alabama, Allow ADUs?

Dadeville’s zoning and building regulations provide for accessory structures but specify no allowance for human occupation (i.e., ADUs). There is no direct reference to granny flats or secondary units in the city’s adopted codes. Interested parties should inquire with the Dadeville Building Department and review the Adopted Building Codes to learn if there’s any pathway for ADU approval but otherwise, they remain prohibited. 

Does Decatur, Alabama, Allow ADUs? 

Decatur’s municipal code identifies accessory buildings such as storage sheds or workshops, but it contains no clarity on whether these structures can be used as an ADU. Without mention of secondary living quarters, these structures remain non-residential only. Those exploring ADUs should contact the Building Department  to determine whether any variance or future amendment could open the door for ADU use.

Does Demopolis, Alabama, Allow ADUs?

Different county, same story. In Demopolis, city ordinance provides clear definitions for accessory structures but none of them include residential purpose. The lack of “Accessory Dwelling Unit” language in the Building Codes Enforced indicates that ADUs are not currently permitted. Potential developers should consult the city permitting office to explore any special permissions or anticipated ordinance updates.

Does Dothan, Alabama, Allow ADUs? 

Dothan’s Planning & Development guidelines authorize accessory structures by right, yet these are strictly for storage or non-living functions. The zoning ordinance contains no provision for ADU-style habitation. Anyone interested in creating a secondary dwelling should start with the Planning Department and closely read the city’s zoning code. If no reference exists, a variance or text amendment would likely be required before the city would grant approval for an ADU. 

Does Double Springs, Alabama, Allow ADUs? 

Online resources don’t show any municipal code text for Double Springs regarding accessory dwellings. The Town Clerk’s office likely handles all building and permit requests, but with no documented code allowances for livable accessory units, ADUs are not currently permitted. For full clarity, prospective builders need to contact the Town Clerk directly and depend on local discretion for approval. 

Does Elba, Alabama, Allow ADUs? 

City of Elba’s building codes permit accessory structures of various types such as sheds and garages but there is no ordinance that explicitly allows those structures to serve as ADUs. If you’re considering a livable accessory unit, you’ll need to verify with the Building Code office and review any zoning or permit guidelines that may allow a conditional use for residential accessory buildings.

Does Enterprise, Alabama, Allow ADUs?  

Yes! Enterprise permits ADUs only within certain zoning classifications (R-1 and R-2). However, it is specified in the zoning ordinances that the ADU cannot be used for short-term rentals and can not be sold separately from the primary dwelling. The Enterprise Building Codes have detailed guidance on permitting and construction standards. ADUs are allowed in residential districts under these conditions:

• Max size: 1000 sq. ft or up to 50% of the primary house size, whichever is more restrictive 
• Rear or side yard placement
• One bedroom and kitchen
• Parking requirement: One off-street space
• Permits and owner occupancy of the main house required 
  
  Start your ADU project today by requesting a quote. We’re here to make it easy.

Does Eutaw, Alabama, Allow ADUs? 

Eutaw’s municipal code permits accessory structures, but it does not explicitly authorize them as habitable units. The code limits the size of any accessory buildings to around 800 sq ft, but because there’s no designation as “Accessory Dwelling Unit,” these structures are still legally non-residential only. For those considering an “in-law” apartment or similar, the best path is to talk to the Building & Code Enforcement office and explore whether a conditional use permit or variance is possible.

Does Evergreen, Alabama, Allow ADUs?

Just like other towns, Evergreen’s publicly available documents generally refer to accessory buildings such as sheds and barns, but they lack any reference to ADUs or use as living space. Without zoning language to specify otherwise, ADUs remain illegal. If you want to determine whether Evergreen is planning to allow ADUs, or if variances are available, contact city hall directly via the contact form. 

Does Fayette, Alabama, Allow ADUs?

Fayette’s zoning ordinance authorizes accessory structures but does not mention “Accessory Dwelling Units,” or anything else along those lines. As it stands currently, the city code prohibits live-in use of accessory buildings. If you’re seeking a workaround, consult the Planning & Zoning Commission to see whether changes are under consideration or whether a variance could accommodate an ADU.

.

Does Florence, Alabama, Allow ADUs?

Yes! Unlike many Alabama counties, Florence has a more developed ADU policy. While the code allows accessory structures broadly, a separate section in the zoning ordinance defines and permits “Accessory Dwelling Units” up to 1,000 sq ft. These units must comply with rear-yard placement, one off-street parking spot, and full IRC building-code compliance. The Building Department and Code Enforcement office handle permits, and further details can be found by reviewing the city’s adopted codes or by calling the Florence Building Department. Thinking about an ADU? Request a quote when you’re ready—we’ll handle the rest.

Does Fort Deposit, Alabama, Allow ADUs?

While the zoning ordinances in Fort Deposit, Alabama allow for accessory structures, they do not specify that they can be used for live-in purposes. You need to contact City Hall at 334-227-4841 to see if they are able to grant you a variance or code amendment for ADU permits and approval. 

Does Fort Payne, Alabama, Allow ADUs?

No. Fort Payne’s municipal code explicitly distinguishes accessory structures for storage from accessory dwelling units and does not include a section that allows living quarters within these buildings. While detached garages, sheds, and workshops are permitted under zoning, residential use is not. The city’s Inspections & Zoning Department offers guidance on permitted accessory structures, but for live-in units, you would need to seek a variance or push for a zoning amendment. Reach out to them for guidance or to inquire about any evolving ADU policies. 

Does Gadsen, Alabama, Allow ADUs?

Currently, Gadsden’s zoning regulations define “Accessory Building or Structure” but use no housing-oriented terms like “dwelling,” “suite,” or “granny flat.” Without explicit ADU wording, those structures remain non-residential only. If exploring an ADU, speak with the Building Department about potential variance petitions or any draft legislation that might add ADU language to the code. 

Does Geneva, Alabama, Allow ADUs?

Geneva allows accessory buildings but is silent on ADUs—the code doesn’t allow those structures to include bedrooms or kitchens. Until an ordinance defines and permits accessory dwellings, ADUs remain prohibited. For a clear answer or to check if the city is considering an update, contact the Building Department directly.

Does Greensboro, Alabama, Allow ADUs? 

Greensboro’s zoning ordinance discusses accessory structures for general use but does not grant any living privileges within these buildings. No ADU definitions are present, so if you want a habitable unit, you’ll need to talk to city officials about variance options or pending code revisions. The City Services or Planning office can advise you on the best next steps.

Does Greenville, Alabama, Allow ADUs? 

No. In Greenville, the zoning code permits accessory structures but contains no clause for residential use. Since ADUs aren’t defined, they’re currently not allowed. Interested parties should contact the Planning and Zoning Department to see if any planning commission discussion or proposal for ADU regulations is forthcoming

Does Guntersville, Alabama, Allow ADUs?

Absolutely! Guntersville permits ADUs with size limits (typically 900 sq ft), parking spaces, and architectural compatibility. The Building Department and Adopted Codes provide guidance. In the City of Guntersville, ADUs are addressed in the zoning ordinance with these requirements: 

• Detached or above-garage units are allowed
• Max size: 900 sq ft or 50% of main home
• Must include one dedicated parking space
• Short-term rentals not permitted in ADUs

Does Gulf Shores, Alabama, Allow ADUs?

Yes! Gulf Shores zoning ordinances now include “Accessory Dwelling Unit” permitting these in single-family residential zones. This code caps ADUs at 1,000 sq ft, mandates one off-street parking space, and requires full compliance with residential building codes. If you live in Gulf Shores and want to learn more, you should engage with the Building Department to explore allowable zones and submit permit applications. When you’re set to begin your ADU, get in touch for a quote—we’re eager to help.

Does Hamilton, Alabama, Allow ADUs?

No. Hamilton does not permit ADUs onto properties for living purposes. You may be able to receive special approval for an ADU from the city planning board. For more information, reach out to the Building Department and ask if there are any variances or conditional permits available for ADUs. 

Does Heflin, Alabama, Allow ADUs?

At this time, Helfin does not specify if ADUs are allowed onto residential properties. While accessory structures are permitted, there is no mention of living in them. If you reside in Heflin and want to find out more information, you can reach out to the Heflin City Office for more clarity. 

Does Hoover, Alabama, Allow ADUs?

Yes! Hoover’s Unified Development Ordinance (UDO) includes a clear definition of “Accessory Dwelling Unit” and permits them in certain residential districts. ADUs are capped at 1,000 sq ft, must be smaller than the primary dwelling, match the main home’s architecture, be on a permanent foundation, and include one off-street parking space. The Inspection Services and Building Codes Divisions administer detailed guidelines and permitting—reach out to them for specific zoning maps and application forms. Need help with your ADU? Request a quote and we’ll get you moving in the right direction.

Does Huntsville, Alabama, Allow ADUs?

Yes! Huntsville’s Planning Commission officially amended the zoning ordinance (Section 73.5) in June 2024 to allow ADUs in specific residential districts (namely R‑1, R‑1A, and R‑1B). Here’s what the ordinance specifies:

• Lot Requirement: Must be in R‑1, R‑1A, or R‑1B zone, with a minimum lot size of 7,500–15,000 sq ft (varies by district)
• Unit Size: Minimum 500 sq ft, maximum 900 sq ft, with the ADU restricted to no more than 60% of the main house’s habitable area
• Quantity: Only one ADU per lot is permitted 
• Placement: Must be located in the backyard (no front or side placements); corner lots are specifically restricted
• Design Standards: ADUs must be built on a permanent foundation, match primary residence materials (no metal siding), and cannot be manufactured/mobile homes
• Parking: Off-street parking is required

Let’s get your ADU underway—request your quote when you’re ready, and we’ll be there to help.

Does Jackson, Alabama, Allow ADUs? 

Jackson, Alabama may allow accessory dwelling units (ADUs) provided they comply with zoning and building codes. These ADUs can take various forms, such as detached cottages, attached additions, or conversions of existing structures like garages. Typically, the maximum size for a detached ADU hovers around 800 to 1,000 square feet, with junior ADUs limited to about 500 square feet. Setback requirements usually include at least 4 feet from the rear and side property lines, ensuring privacy and proper spacing. One off-street parking space is generally required for detached ADUs, though conversions may be exempt. ADUs must be designed to complement the primary dwelling’s architectural style. For detailed guidance, interested parties should contact the Jackson Public Works Department and review the local zoning ordinance.

Does Jasper, Alabama, Allow ADUs? 

In Jasper, detailed zoning ordinance searches reveal that while accessory structures are permitted, they are strictly prohibited from human occupancy. There are no code sections referencing ADUs or any residential use for these structures. Without explicit inclusion of ADUs in the code, they are currently not permitted in Jasper.

Does Lafayette, Alabama, Allow ADUs? 

LaFayette, Alabama permits accessory dwelling units subject to the city’s standard zoning and building codes. Though specific size, setback, and parking requirements are not explicitly detailed online, ADUs must adhere to residential zoning standards which typically include minimum setbacks from property lines, off-street parking availability, and size proportionality to the main residence. These units must comply with local building codes and maintain architectural harmony with existing structures. For clarification and detailed requirements, individuals should contact the LaFayette Street, Sanitation, & Cemetery Department. 

Does Livingston, Alabama, Allow ADUs? 

The online municipal code for Livingston currently covers traditional accessory buildings but lacks any explicit language permitting residential use. ADUs aren’t mentioned, meaning that under current regulations, ADUs are not legally endorsed. Further verification from city permit offices would be necessary for clarity. To verify if you are able to build an ADU in Livingston, contact the Livingston Zoning Office to discuss potential ADU projects and confirm applicable requirements. 

Does Luverne, Alabama, Allow ADUs? 

Luverne’s municipal documents revolve around accessory structures rather than accessory dwelling units. There’s no explicit code provision allowing these structures to be used as habitable units. As a result, ADU regulations remain unclear unless the City Clerk confirms otherwise via upcoming code updates. For specific information, contact the Luverne City Office for any further questions. 

Does Marion, Alabama, Allow ADUs? 

No. Marion, Alabama allows accessory units on properties, but they are prohibited for living purposes. For more comprehensive details and the application process, contact the Marion Governing Body. 

Does Millport, Alabama, Allow ADUs?

Millport’s municipal code and public documents show only general allowances for accessory buildings—no mention of habitable uses or ADUs. There is no code provision enabling living use in backyard cottages or other secondary structures, which means ADUs are not legally supported in this municipality. Contacting town officials could confirm if any updates are pending.

Does Mobile, Alabama, Allow ADUs?

Yes! Mobile stands out as one of the few Alabama cities with a robust, clear ADU ordinance. Mobile  authorizes accessory dwelling units within residential zoning districts. Mobile’s Unified Development Code (Ordinance 64‑17/64‑26, adopted June 2022) includes an entire section on “Accessory Dwelling Units,” clearly defined and permitted by right in residential zones permitting one home per lot. Requirements include:

• Maximum size of 50% of the main house’s floor area
• Permanent foundation required
• Off-street parking required
  
• Location restricted to behind the primary home
• Must comply with all building codes

Don’t wait to get started on your ADU—reach out for a quote and we’ll guide you through it.

Does Montgomery, Alabama, Allow ADUs?

Montgomery’s city site indicates a comprehensive zoning ordinance is being reworked, but the current online building codes and municipal documents do not yet explicitly reference ADUs. Until the updated SmartCode includes ADUs, they are likely not officially allowed. Checking directly with the Community Development or Planning Division is recommended to see what the future for ADUs in this municipality is. 

Does Moulton, Alabama, Allow ADUs?

Moulton’s publicly available building and zoning information specifies some general allowance for accessory structures, but there is no mention of residential use within those structures. Without a defined ADU clause, accessory units for living are not explicitly permitted. For specific regulations and to initiate permitting, contact the Moulton Building Department. 

Does Northport, Alabama, Allow ADUs?

Northport, Alabama recently updated their code in May 2025 to include accessory structures as permitted, but there is no mention of these structures being permitted for dwelling purposes. Residents of Northport should assume that ADUs are not explicitly permitted and contact the Planning & Inspections staff for case-by-case guidance and regulatory details. 

Does Oneonta, Alabama, Allow ADUs?

Possibly. Oneonta, Alabama may permit accessory dwelling units with the requirement of securing building inspections and permits before construction. ADUs must comply with local zoning standards that address size limits—typically capping units at around 800 to 900 square feet—setbacks from property lines, and off-street parking, usually one space per unit. The city enforces building codes to ensure safety and compatibility with neighborhood character. Homeowners interested in ADUs should contact the Oneonta Building Inspections & Permits office for detailed application requirements and guidance. 

Does Opelika, Alabama, Allow ADUs?

Opelika currently regulates accessory structures through its Planning & Zoning and Zoning Board of Adjustment, but there’s no explicit allowance for living spaces in those structures. The code doesn’t mention “accessory dwelling units.” Therefore, ADUs are not presently permitted, and any ADU would require a variance. Contact the zoning department for further information or peruse the codes for more clarity. 

Does Ozark, Alabama, Allow ADUs?

Ozark’s code allows accessory structures, but offers no language that permits them to be used as dwellings. Without explicit definitions or use-category allowances for ADUs in city ordinances, they are not legally permitted. You should confirm with the Ozark Inspection Department, but the zoning appears to prohibit ADUs.

Does Pell City, Alabama, Allow ADUs?

Here again the Pell City municipal code fails to specify if accessory structures can be used as dwelling units. Property owners interested in building an ADU should reach out to the Pell City Planning & Zoning Department for detailed regulations and permitting processes. 

Does Phenix City, Alabama, Allow ADUs?

No. The Phenix City Code of Ordinances permits accessory buildings like sheds and garages, but it makes no mention of residential use such as accessory dwelling units. No sections reference “Accessory Dwelling Unit,” “secondary unit,” or “in-law suite.” Without explicit ADU language, the city does not allow living in accessory structures. You would likely need a variance or code amendment for a legal ADU. You can verify this with the Planning and Building Department. 

Does Prattville, Alabama, Allow ADUs?

Like other counties, Prattville, Alabama manages accessory dwelling units through its Planning & Development Department and enforces adopted building codes. However, there is no clear outline in the building codes, leaving it up to the approval of the local planning boards. If you are interested in building an ADU, you may be able to request a variance or code adjustment to allow you. Homeowners should contact the Prattville Planning & Development Department and review the adopted building codes for the latest guidelines and application procedures. 

Does Rockford, Alabama, Allow ADUs?

Rockford, Alabama likely allows accessory dwelling units in line with local building codes, although explicit ADU ordinances are not publicly available online. Prospective builders should directly contact the town office to inquire about zoning restrictions, building permits, and parking requirements to ensure compliance with all applicable regulations. 

Does Russellville, Alabama, Allow ADUs?

Russellville’s Building, Licensing, and Zoning Ordinance references accessory structures but makes no mention of residential occupancy. Searches of the online code reveal no “ADU,” “secondary dwelling,” or “accessory apartment” language. Thus ADUs are not permitted under current rules. If you’re considering an ADU, check with their Zoning Department about variances or future amendments.

Does Scottsboro, Alabama, Allow ADUs?

Like many other Alabama counties, Scottsboro  allows accessory structures in their zoning ordinances, but doesn’t specify if they can be used for dwelling purposes. Residents should contact the Scottsboro Building Department to get complete information on ADU applications and standards. 

Does Selma, Alabama, Allow ADUs?

No. Selma, Alabama permits accessory units but they are prohibited from residential use. If you are interested in requesting a code adjustment or special approval for an ADU in Selma, you should consult Zeb Lee, the current Selma Building Inspector for specific regulations and application procedures. 

Does Talladega, Alabama, Allow ADUs?

Talladega, Alabama allows accessory dwelling units in residential zoning districts, typically with size restrictions around 900 square feet and at least one off-street parking space. Setbacks usually require a minimum distance of 5 feet from property lines. ADUs must comply with building codes and receive inspections prior to occupancy. For specific regulations and the permit process, contact the Talladega Building Inspector. 

Does Troy, Alabama, Allow ADUs?

No. Troy, Alabama specifically states in their zoning codes, “An accessory structure specifically excludes structures used for human habitation.” permits accessory dwelling units subject to inspections and zoning regulations. Construction requires obtaining the necessary building permits and passing inspections for safety and code compliance. Interested homeowners should contact the Troy Inspections Department for more detailed ADU policies and application instructions.

Does Tuskegee, Alabama, Allow ADUs?

Tuskegee, Alabama manages accessory dwelling units through its Building Codes and Inspections Department. The size requirements and other ADU specifications are not outlined in the zoning ordinances.For further information on permits and regulations, contact Tuskegee Building Codes and Inspections. 

Does Union Springs, Alabama, Allow ADUs?

Here again, specific ADU regulations are not publicly documented for the public online, although it appears that accessory buildings can only be used for sleeping purposes and not traditional living. If you are interested in building an ADU in Union Springs, Alabama, you should contact the city government directly to inquire about zoning, permitting, and inspection requirements to ensure compliance. 

Does Wadley, Alabama, Allow ADUs?

Wadley, Alabama may allow accessory dwelling units, but no detailed regulations are currently available online. Prospective builders are encouraged to contact town officials for up-to-date information on zoning restrictions, permit requirements, and any applicable parking or setback rules. 

Does Warrior, Alabama, Allow ADUs?

Warrior, Alabama generally approves permits for accessory dwelling units with size and parking requirements enforced by the city’s permit office. The ADUs must be smaller in size to the main dwelling and provide at least one off-street parking space. Building permits and inspections are mandatory prior to occupancy. For more detailed guidelines, visit Warrior Permit to submit an ADU application. 

Does Wetumpka, Alabama, Allow ADUs?

Wetumpka, Alabama does not have specific publicly available ADU regulations but manages accessory dwelling units under the broader framework of local building codes and zoning ordinances. For confirmation and application details, interested parties should reach out to Wetumpka city officials. 

Searching For An ADU Builder Serving Alabama?

If you reside in an Alabama county that permits ADUs, Zook Cabins would be thrilled to help you install your dream ADU. We create modular ADUs that are comfortable, functional for full-time living, and luxurious. Every model is built to match and even exceed local building codes. 

Interested in learning more? Contact a sales representative to learn more, or get a free quote for one of the models that catches your eye. 

Tiny Home & ADU Rules By State: How Do They Compare?

Depending on the county you reside in, the line between tiny homes and ADUs may be fuzzy. Certain counties allow tiny homes on wheels but not ADUs. Others may allow park model homes to be used as an ADU but not larger models. 

If you want to find more about Alabama tiny home laws, check out our comprehensive guide to tiny home regulations in the state of Alabama. Or browse the table below for information on every state and their tiny home laws.