Garage Permits in TN: The Ultimate Guide

When planning to build a garage in Tennessee, it’s important to understand the specific permit requirements set by local municipalities to ensure that your construction project complies with state and local laws. Whether you’re adding a standard garage, or a detached structure, obtaining the right permits is an essential step in the process. Each county or city in Tennessee may have its own set of building codes and zoning regulations, making it crucial to be aware of the specific guidelines in your area.

Below is a detailed guide to help you understand the various steps involved in obtaining the necessary permits for your garage project in Tennessee. In the meantime, if you’d like to explore the garage models we offer or design your own with our 3D Builder, feel free to visit our Garage Page or 3D Building Page.

Do I need a permit to build a garage in TN?

This is an important step to consider when planning to get a garage shed in Tennessee. The answer is yes, you’ll likely need a permit.

In most counties and cities in Tennessee, a garage that is under 100 square feet typically doesn’t require a permit. However, if the garage exceeds that size, you’ll need to obtain a permit before finalizing your purchase. Additionally, if you plan to convert the garage into an office, man cave, or any space that requires electrical work, you’ll also need a permit for electricity.

What is the biggest garage you can build without planning permission?

​In Tennessee, the size of a garage you can build without a permit varies depending on local regulations. While the state does not require a permit for detached garages, sheds, barns, or other detached structures that are not used for living purposes, local municipalities may have their own requirements. ​

For instance, in Knox County, a residential building permit is required for garage sheds larger than 120 square feet. Similarly, in Rutherford County, a permit is required for garages that are 120 square feet or greater, regardless of whether they are on blocks, skids, or have a permanent foundation.

In Davidson County, a permit is required for garage sheds larger than 10×10 square feet. However, in Springfield, TN, a permit is required for any garage or accessory building over 200 square feet.

Therefore, it’s essential to check with your local building or codes department to determine the specific requirements for your area.

Do I Need a Permit to Run Electricity to My Garage in TN?

​Yes, in Tennessee, you generally need a permit to run electricity to a garage, regardless of its size or whether the shed itself requires a building permit. The Tennessee Department of Commerce & Insurance mandates that installing electrical conductors and equipment within or on buildings or structures, including garage sheds, requires an electrical permit and subsequent inspections. ​

Garage Permit Requirements in TN Counties

​Garage permit requirements in Tennessee vary by county and municipality. While the state provides general guidelines, local jurisdictions often have specific regulations.

Here’s an overview of garage permit requirements in several Tennessee counties:​

Do I Need a Garage Permit in Davidson County, TN?

Yes, you need a permit to build a garage in Davidson County, Tennessee.

The Metro Nashville Department of Codes and Building Safety requires a residential building permit for constructing any accessory structure, including detached garages, carports, and sheds over 100 square feet.

Do I Need a Garage Permit in Knox County, TN?

Yes, in Knox County, TN, you generally need a permit to build a garage, especially if it’s over 120 square feet.

In unincorporated areas, a permit is required for garages over 120 square feet, while in the City of Knoxville, a permit is needed for any size garage. You’ll need to submit a site plan, construction plans, and schedule inspections during the build. If you plan to add electricity or plumbing, separate permits are also required.

Do I Need a Garage Permit in Shelby County, TN?

​Yes, in Shelby County, Tennessee, a building permit is generally required to construct a garage, regardless of its size or whether it’s attached or detached.

Garages must follow zoning rules for setbacks, height, and placement, and separate permits are required for adding electricity, plumbing, or HVAC. You can apply for a permit through the Develop901 portal, and inspections will be needed during construction. Before starting your project, check with Shelby County Construction Code Enforcement for the exact requirements.

Do I Need a Garage Permit in Hamilton County, TN?

According to the Hamilton County Building Inspection Department, a building permit is necessary for any new construction, alteration, addition, or repair to a structure.

However, there is an exception for storage buildings that are 10 feet by 20 feet (200 square feet) or smaller and do not have plumbing or electrical installations; such structures do not require a permit.

Do I Need a Garage Permit in Williamson County, TN?

​Yes, in Williamson County, Tennessee, a building permit is required to construct a garage, whether attached or detached.

The county enforces the International Building Code, and the Building Codes Department manages permits. You’ll need to submit construction plans, which may be subject to inspections during the building process. Additional permits are necessary if your garage includes electrical, plumbing, or HVAC systems.

Do I Need a Garage Permit in Rutherford County, TN?

In Rutherford County, for unincorporated areas, any accessory structure 120 square feet or larger, or any size if placed on a permanent foundation, requires a permit.

Additionally, all accessory structures must comply with zoning regulations, including setbacks and easements, and must include a site plan showing the structure’s location relative to property lines, existing buildings, and septic systems.

Do I Need a Garage Permit in Sumner County, TN?

Yes, in Sumner County, Tennessee, a permit is generally required to build a garage. For detached garages or storage buildings over 200 square feet, a zoning permit is necessary.

Local building codes apply to properties within city limits, such as Gallatin, Hendersonville, or Goodlettsville. In these areas, a building permit is required for garage construction, regardless of size. The permitting process typically involves submitting a site plan and construction drawings, and scheduling inspections for various stages of construction, including footing, framing, and final inspection.

Do I Need a Garage Permit in Montgomery County, TN?

In Montgomery County, TN, you need a building permit to construct a garage, whether attached or detached.

The garage must meet zoning regulations, including setbacks and height limits. If you plan to add electricity, plumbing, or HVAC, separate permits are required. Permit applications are handled through the Montgomery County Building and Codes Department. It’s important to check with the county before starting construction to ensure full compliance.

Do I Need a Garage Permit in Blount County, TN?

​Yes, in Blount County, Tennessee, a building permit is required to construct a garage if the structure exceeds 200 square feet in area.

A building permit is not required for residential accessory structures under 200 square feet. However, if you plan to add electrical, plumbing, or HVAC systems to your garage, separate permits are required for each system.

Do I Need a Garage Permit in Washington County, TN?

For accessory structures, such as garages, specific zoning regulations apply.

Notably, the total area of all accessory buildings on a property cannot exceed the footprint of the principal structure. Additionally, these structures must be located in the side or rear yard and maintain a minimum setback of 7.5 feet from any lot line.

Which Cities in TN require A Garage Permit?

In Tennessee, the construction of a garage—whether attached or detached—typically requires a building permit. Specific permit requirements vary depending on local building codes, zoning ordinances, and the intended size and use of the structure.

Below is an overview of garage permit regulations across several cities in Tennessee:

Garage Permits in Nashville

A building permit is required for any garage structure over 100 square feet.

Both attached and detached garages must meet zoning requirements for setbacks, height limits, and lot coverage. In some historic districts, additional design review approvals may be necessary. To ensure code compliance, it’s important to submit a full site plan and follow the city’s inspection schedule.

Garage Permits in Memphis

In Memphis, you must obtain a building permit before constructing any garage, regardless of its size.

Applications must include construction drawings and a site plan. Permits ensure the garage meets setback, drainage, and floodplain requirements. If you plan to run electricity, separate electrical permits will also be needed. Final inspections are required before the garage can be used.

Garage Permits in Knoxville

Garage permits are necessary for structures over 120 square feet in Knoxville.

Both new construction and major modifications of garages require zoning review for placement, size, and utility access. Detached garages must be placed in the rear yard and meet minimum setback distances. Additional permits for electrical, plumbing, or mechanical work must be secured separately.

Garage Permits in Chattanooga

Chattanooga requires a building permit to construct garages, attached or detached.

Structures under 200 square feet and without utilities might be exempt, but should still comply with zoning laws. For larger garages, a site plan is necessary to show the garage’s location, setbacks, and distance from other structures. Multiple inspections will be needed throughout construction.

Garage Permits in Clarksville

All garages in Clarksville require a building permit, and detached structures must meet both zoning and building code standards.

Applicants must submit a detailed site plan showing property lines, utility lines, and the proposed structure’s placement. Setback rules from neighboring properties vary by zoning district. Inspections cover the foundation, framing, and final build.

Garage Permits in Gallatin

In Gallatin, building permits are required for all garages, regardless of size.

Permits ensure that structures follow zoning laws, including setbacks, lot coverage, and maximum height. Garage builders must also schedule inspections at various stages of construction, including footing, framing, and the final completion stage. Additional permits may be needed for electrical systems.

Garage Permits in Kingsport

A permit is needed for any garage construction in Kingsport.

Accessory structures must follow specific regulations regarding location, lot coverage, and distance from property lines. Detached garages typically must be built in the side or rear yard, with a required minimum setback from property lines. A site plan and inspection schedule must be submitted with the application.

Garage Permits in Bartlett

Building permits are mandatory for detached garages in Bartlett.

Before applying, you must submit a site plan that shows the placement of the garage in relation to property boundaries and any existing structures. Garages must meet minimum setback and lot coverage requirements. If your garage includes utilities like electricity or plumbing, additional permits are required.

Garage Permits in Cleveland

In Cleveland, you are required to secure a building permit before constructing garages or making major alterations to existing ones.

Applications need to include a site plan and construction drawings. Setbacks, height limits, and drainage must be addressed to comply with local codes. Inspections are conducted to ensure safety and code compliance throughout the build.

Garage Permits in Paris

Building permits are needed in Paris, TN for constructing or modifying garages.

All plans must be reviewed to confirm they meet local zoning and building code requirements, including setbacks, structure height, and lot coverage. If you plan to install any electrical or plumbing systems, you must apply for additional permits. Final approval is contingent on passing all inspections.

Where do I get a Garage permit in TN? 

In Tennessee, getting a garage permit depends on your location. The state generally doesn’t require a residential building permit for detached garages not used for living space, but local governments often have their own rules.

Cities like Nashville and Goodlettsville require permits for garages, and the process usually involves submitting construction plans and scheduling inspections. To get started, check if your property falls under state or local permitting, contact your local codes department, prepare the necessary documents, and submit your application.

How much is a Garage permit in TN?

The cost of a garage permit in Tennessee can vary depending on where you live and the size/type of the garage you’re building.

Here’s a general idea:

• Residential garage permits usually cost between $50 and $300.
• Some cities/counties also charge based on the square footage — like $0.30 to $0.50 per square foot.
• You might also have plan review fees, inspection fees, or impact fees added.

For example:

• In Nashville (Davidson County), a residential building permit can start around $100+ for small projects and go up based on size.
• In Knox County, fees are based on estimated construction value.
• In smaller towns or rural counties, it might be a flat fee like $50–$100.

How long does it take to get a Garage permit in TN? 

In Tennessee, garage permit approval usually takes 5 to 10 business days on average. However, processing times can vary by location:

• Local differences: Some counties, like Murfreesboro, may take up to 2 weeks to review, while others, like Rutherford County, may review within 48 hours.
• Standard review: Around 5–10 business days.
• Complex projects: May take up to 2 weeks.

How long does a Garage permit last in TN?

In Tennessee, a garage permit is typically valid for 180 days if no work has started. After work begins, it’s generally valid for two years unless the project is suspended for more than 180 days. Local rules may vary, so it’s best to check with your local building authority for specifics.

What is the penalty for not getting a Garage permit?

In Tennessee, building a garage without a permit can lead to fines, legal issues, and even mandatory demolition of the structure. Violations may also complicate property sales, insurance, and refinancing. Local penalties vary, so it’s best to check with your local building department for specific rules and fees.

Garage Permit Requirements in TN

In Tennessee, garage permit requirements vary by location, but typically include:

1. Permit Application: Submit a completed form to your local building department.
2. Site Plan: Show garage location and setbacks from property lines.
3. Construction Plans: Provide detailed blueprints.
4. Zoning Compliance: Ensure the project meets zoning rules.
5. Fees: Pay applicable permit fees.

Always check with your local zoning or building office for specific permit requirements.

Ready For Your GARAge?

In Tennessee, most garage constructions require permits, including zoning and potentially building permits, depending on the size and scope of the project. Detached garages under 200 square feet may be exempt from building permits, but zoning approval is still typically required. If you’re adding electricity to the garage, an electrical permit is necessary. Permit requirements can vary by municipality, so it’s important to check with local zoning offices for specific rules. Each county and city, like Nashville, Knoxville, and Chattanooga, has its own guidelines and permit processes, which may include submitting site plans and ensuring compliance with local land use regulations.

Don’t forget, if you’re ready to explore your garage options, our 3D Garage Builder and model pages are always here to help!