Do I need a permit to build a deck in Louisville, KY?

Yes. In Louisville, any deck attached to your home requires a building permit regardless of size. Freestanding decks larger than 200 square feet also require a permit. Your permit application must include a site plan showing the deck's location on the lot, its dimensions, and the distance from the deck to all property lines. Louisville Metro plan reviewers use this information to confirm the deck meets setback requirements for your specific zoning district. If your property is in a historic overlay zone such as Old Louisville or Cherokee Triangle, you may also need a Certificate of Appropriateness from the Louisville Landmarks Commission before the building permit can be issued. Submit your application through the Develop Louisville online portal or in person at 444 S. 5th Street downtown.

How much does a building permit and site plan cost in Louisville?

Louisville Metro building permit fees are based on the estimated construction value of your project. For most residential projects, the fee starts at a base rate and increases incrementally as the project value rises. As a rough estimate, a simple deck or shed permit might cost between $75 and $200, while a room addition or ADU permit could run $300 to $800 or more depending on valuation. Plan review fees are typically included in the permit fee. The site plan itself is a separate cost: hiring a licensed surveyor or drafter can cost $400 to $1,500 or more, while using an online tool like Site Plan Creator can reduce that cost significantly. Always check the current fee schedule on the Develop Louisville portal, as fees are subject to change.

How long does it take to get a residential building permit approved in Louisville?

Permit approval timelines in Louisville Metro vary by project complexity. Simple projects such as sheds, decks, and fences typically go through plan review in 5 to 10 business days when submitted with a complete and accurate application. Room additions, garage conversions, and ADUs may take 3 to 6 weeks. Projects that require additional review layers - such as properties in a FEMA Special Flood Hazard Area, a historic preservation overlay zone, or cases that need a Board of Zoning Adjustment variance - can take 6 to 12 weeks or longer. Submitting a complete application with a properly drawn site plan is the most effective way to avoid delays. Incomplete applications or plans that do not meet Louisville Metro's requirements are returned for correction, which restarts the review clock.

What does Louisville require on a residential site plan?

Louisville Metro Development Services requires that a residential site plan be drawn to a recognized scale and include the following elements: the full legal dimensions of the lot, the footprints and locations of all existing structures on the property (house, garage, sheds), the location and dimensions of the proposed new construction or improvement, the distance from all proposed structures to each property line (setback dimensions), a north arrow, a graphic scale bar, the street address, and the property owner's name. For projects involving driveways or patios, the site plan must also show total impervious surface coverage as a percentage of the lot. Projects in floodplain areas must show the FEMA flood zone designation. Louisville reviewers will reject plans that are missing any of these required elements.

Can I draw my own site plan in Louisville, or do I need a licensed surveyor?

For most standard residential permit projects in Louisville - such as decks, sheds, fences, pools, and small additions - you are not required to hire a licensed surveyor or engineer to prepare the site plan. You can draw your own site plan as long as it is accurate, drawn to scale, and includes all required elements. Many homeowners use their property deed, plat map (available from the Jefferson County PVA), and a measuring tape to gather the information needed. Online tools like Site Plan Creator make it straightforward to produce a professional, to-scale site plan without specialized drafting skills. However, for larger additions, ADUs, or projects in floodplain or historic overlay areas, Louisville Metro may require stamped drawings from a licensed architect or engineer for the structural components, even if the site plan itself does not require a professional seal.

What are the setback requirements for a residential property in Louisville, KY?

Setback requirements in Louisville Metro depend on your specific zoning district, which you can look up using the Louisville Metro zoning map or the Land Development Code. For typical single-family residential zones, front setbacks generally range from 20 to 40 feet, side setbacks are usually 5 to 10 feet per side, and rear setbacks are typically 20 to 25 feet for primary structures. Accessory structures like detached garages and sheds often have reduced setbacks, sometimes as little as 3 to 5 feet from side and rear property lines. Corner lots have additional street-side setback requirements. Properties in planned development districts or traditional neighborhood districts may have different standards. Always verify your district's specific setbacks before finalizing your site plan, since building outside the required setbacks will result in permit rejection.

Where do I submit a site plan and permit application in Louisville?

Louisville Metro has moved most residential permit applications to its online Develop Louisville portal, which is the preferred and fastest submission method. You can upload your application, site plan, and supporting documents directly through the portal at louisvilleky.gov. If you prefer to submit in person, the Metro Development Center is located at 444 S. 5th Street in downtown Louisville. Staff at the Development Center can answer questions about required documents and help you determine which permit type applies to your project. For projects requiring zoning review or variance approval, you may also interact with the Louisville Metro Planning Commission. It is a good idea to call the Development Services office at (502) 574-3321 before your first visit to confirm current hours and any updated submission requirements.

What happens if I build without a permit in Louisville, KY?

Building without a required permit in Louisville Metro can result in serious consequences. If an inspector or code enforcement officer discovers unpermitted work, Louisville Metro can issue a stop-work order immediately, halting all construction. You will then be required to apply for a permit retroactively, which often involves additional fees - sometimes double the standard permit fee - and may require destructive inspections to verify that work already completed meets code. In some cases, unpermitted structures must be partially or fully demolished. Unpermitted work can also create problems when you sell your home, as title searches and home inspections often uncover permit history. Mortgage lenders and buyers may require that unpermitted work be legalized or removed before closing. The safest and most cost-effective approach is always to pull the permit before starting work.

Does Louisville allow ADUs, and what are the site plan requirements for one?

Yes. Louisville Metro has expanded its allowances for accessory dwelling units (ADUs) in recent years as part of broader housing affordability initiatives. ADUs are permitted in most single-family residential zoning districts, subject to specific standards in the Louisville Metro Land Development Code. Permitted ADU types include detached backyard cottages, garage conversions, and attached additions. Your ADU permit application must include a site plan showing the ADU's location on the lot, its setbacks from all property lines, the footprint of the primary residence, and total impervious surface coverage. The site plan must also confirm that required off-street parking is maintained. Maximum ADU size is typically capped at a percentage of the primary dwelling's floor area or an absolute square footage limit. Contact Develop Louisville or consult the Land Development Code for the current ADU standards applicable to your zoning district.

Does living in a floodplain affect my permit requirements in Louisville?

Yes, significantly. Louisville Metro has extensive areas mapped within FEMA Special Flood Hazard Areas (SFHAs) due to the Ohio River and its tributaries. If your property is in a mapped floodplain, your permit application will require additional review by Louisville Metro's floodplain administrator. Projects in SFHAs must demonstrate compliance with Louisville's floodplain management ordinance, which typically means the lowest finished floor of any new or substantially improved structure must be elevated to or above the Base Flood Elevation (BFE). You may also need a FEMA Elevation Certificate prepared by a licensed surveyor. Your site plan must identify the flood zone designation and may need to show the BFE relative to the proposed construction. You can check your flood zone status using FEMA's Flood Map Service Center at msc.fema.gov before starting your application.

Site Plan Requirements in Louisville, KY (Permit Guide)

By Site Plan Creator Team • May 18, 2026

Louisville, Kentucky homeowners navigating the local permit process need to understand when a residential site plan is required and what it must include. From decks and fences to ADUs and pool installations, Louisville's Louisville Metro Development Services office has specific documentation requirements. Site Plan Creator helps you produce a code-compliant site plan quickly and affordably.

Site plan requirements for residential properties in Louisville, Kentucky

Residential Site Plans and Permits in Louisville, KY

Louisville is one of Kentucky's fastest-growing metros, and with that growth comes an active residential construction scene spanning the historic Highlands neighborhood, newer suburban developments in Middletown and Jeffersontown, and everything in between. Whether you are adding a backyard deck on a classic Louisville shotgun house or converting a garage into an accessory dwelling unit (ADU) in the Butchertown area, you will almost certainly need a building permit - and that permit application will require a residential site plan. Understanding what Louisville Metro Government expects from your documentation can save you weeks of back-and-forth with the plan review office.

What Is a Residential Site Plan and Why Does Louisville Require One?

A residential site plan is a scaled, bird's-eye drawing of your property that shows the boundaries of your lot, the footprint of all existing structures, and the location of any proposed new construction or improvements. Louisville Metro Government requires site plans because they allow plan reviewers to verify that your project complies with the Louisville Metro Land Development Code (LDC), which governs zoning districts, setbacks, impervious surface limits, and floodplain restrictions.

Without an accurate site plan, the city cannot confirm that your addition stays within required setbacks, that your new driveway does not push impervious surface coverage over the allowed maximum, or that your proposed structure avoids mapped floodplain areas. The site plan is the single document that ties your project to the real-world conditions of your specific lot.

When Does Louisville Require a Permit and Site Plan?

Louisville Metro's Development Services office requires a building permit - and typically a site plan - for a broad range of residential projects. Common triggers include:

Decks and porches: Any deck attached to the house, or a freestanding deck over 200 square feet, requires a permit and site plan.
Sheds and accessory structures: Detached structures larger than 200 square feet require a permit. Smaller sheds may still need a zoning review if they are close to property lines.
Swimming pools: All in-ground pools and above-ground pools with a water depth exceeding 24 inches require a permit and site plan showing setbacks from property lines and the house.
Fences: Fences over 6 feet in height generally require a permit. Even shorter fences may need a zoning review in certain districts or historic overlay zones.
Room additions: Any addition to the home's footprint requires a full building permit, structural drawings, and a site plan.
Driveways and impervious surfaces: New driveways or expansions of existing ones that connect to a public street require a right-of-way permit, and the site plan must show total impervious surface coverage.
ADUs and garage conversions: Louisville has expanded ADU allowances in recent years. Both attached and detached ADUs require permits and site plans that demonstrate compliance with the LDC's ADU-specific standards.
Pools and hot tubs: Barrier and setback requirements must be documented on the site plan.

Louisville Zoning Quirks and Local Considerations

Louisville merged city and county governments in 2003 to form Louisville Metro, which means the Louisville Metro Land Development Code applies across a large and varied geographic area. A few local quirks are worth knowing:

Historic Preservation Overlay Zones: Neighborhoods like Old Louisville, Cherokee Triangle, and Butchertown are subject to design review by the Louisville Landmarks Commission. Projects in these areas may require a Certificate of Appropriateness before a building permit is issued, adding time to your timeline.

Floodplain Considerations: Louisville sits along the Ohio River and has extensive mapped floodplain areas. Projects in FEMA Special Flood Hazard Areas (SFHAs) must comply with Louisville Metro's floodplain regulations and may require an elevation certificate. You can check your property's flood zone status through FEMA's Flood Map Service Center.

Impervious Surface Limits: Many residential zoning districts in Louisville Metro cap the percentage of a lot that can be covered by impervious surfaces (roofs, driveways, patios). Your site plan must calculate and display existing and proposed impervious coverage.

Tree Preservation: Louisville has a tree canopy preservation program. Significant trees on your property may require documentation or replacement planting as part of your permit approval.

HOA Restrictions: Many Louisville-area subdivisions have active homeowners associations with design standards that are separate from - and often stricter than - Metro's zoning rules. Always check your HOA covenants before starting a project.

Typical Setback Requirements in Louisville

Setbacks vary by zoning district, but the following ranges are typical for single-family residential (R) zones across Louisville Metro:

Front setback: 20 to 40 feet from the front property line, depending on the district and the established setback pattern on the block.
Side setback: 5 to 10 feet per side for primary structures; accessory structures may be allowed as close as 3 feet to a side property line in some districts.
Rear setback: 20 to 25 feet for primary structures; accessory structures often have a reduced rear setback of 5 feet.
Corner lots: Additional setback requirements apply to the street-facing side yard.

Always verify the specific setbacks for your zoning district through the Louisville Metro Land Development Code before finalizing your site plan.

The Louisville Permit Submission Process

Louisville Metro has transitioned most residential permit applications to its online portal, Develop Louisville. Here is a general overview of the process:

Determine your project type and required documents. The Develop Louisville portal provides checklists by project type. Most residential projects require a completed application, a site plan, and construction drawings.
Create your site plan. The site plan must be drawn to scale and include lot dimensions, existing structure footprints, proposed improvements, setback dimensions, north arrow, and a scale bar.
Submit online. Upload your application and supporting documents through the Develop Louisville portal. In-person submissions are accepted at the Metro Development Center at 444 S. 5th Street in downtown Louisville.
Plan review. Simple residential projects (sheds, decks) often receive a decision within 5 to 10 business days. More complex projects involving zoning variances, historic overlays, or floodplain review can take 4 to 8 weeks or longer.
Permit issuance and inspections. Once approved, you pay your permit fee and receive your permit. Post your permit on site and schedule required inspections at each phase of construction.

Common reasons Louisville applications are rejected or delayed include: site plans that are not drawn to scale, missing setback dimensions, failure to show all existing structures on the lot, incorrect zoning district information, and omission of impervious surface calculations. Double-checking your site plan against the project checklist before submission is the single best way to avoid a rejection.

Get a Code-Ready Site Plan with Site Plan Creator

Preparing a site plan that meets Louisville Metro's requirements does not have to be complicated or expensive. Site Plan Creator gives Louisville homeowners and contractors an easy-to-use, professional tool for producing accurate, to-scale residential site plans in a fraction of the time it would take to draw one by hand or hire a surveyor for a simple permit project. Our plans include all the elements Louisville reviewers look for: lot dimensions, structure footprints, setbacks, north arrows, and scale bars. Start your Louisville site plan today and move your project forward with confidence.

Frequently Asked Questions

Do I need a permit to build a deck in Louisville, KY?: Yes. In Louisville, any deck attached to your home requires a building permit regardless of size. Freestanding decks larger than 200 square feet also require a permit. Your permit application must include a site plan showing the deck's location on the lot, its dimensions, and the distance from the deck to all property lines. Louisville Metro plan reviewers use this information to confirm the deck meets setback requirements for your specific zoning district. If your property is in a historic overlay zone such as Old Louisville or Cherokee Triangle, you may also need a Certificate of Appropriateness from the Louisville Landmarks Commission before the building permit can be issued. Submit your application through the Develop Louisville online portal or in person at 444 S. 5th Street downtown.
How much does a building permit and site plan cost in Louisville?: Louisville Metro building permit fees are based on the estimated construction value of your project. For most residential projects, the fee starts at a base rate and increases incrementally as the project value rises. As a rough estimate, a simple deck or shed permit might cost between $75 and $200, while a room addition or ADU permit could run $300 to $800 or more depending on valuation. Plan review fees are typically included in the permit fee. The site plan itself is a separate cost: hiring a licensed surveyor or drafter can cost $400 to $1,500 or more, while using an online tool like Site Plan Creator can reduce that cost significantly. Always check the current fee schedule on the Develop Louisville portal, as fees are subject to change.
How long does it take to get a residential building permit approved in Louisville?: Permit approval timelines in Louisville Metro vary by project complexity. Simple projects such as sheds, decks, and fences typically go through plan review in 5 to 10 business days when submitted with a complete and accurate application. Room additions, garage conversions, and ADUs may take 3 to 6 weeks. Projects that require additional review layers - such as properties in a FEMA Special Flood Hazard Area, a historic preservation overlay zone, or cases that need a Board of Zoning Adjustment variance - can take 6 to 12 weeks or longer. Submitting a complete application with a properly drawn site plan is the most effective way to avoid delays. Incomplete applications or plans that do not meet Louisville Metro's requirements are returned for correction, which restarts the review clock.
What does Louisville require on a residential site plan?: Louisville Metro Development Services requires that a residential site plan be drawn to a recognized scale and include the following elements: the full legal dimensions of the lot, the footprints and locations of all existing structures on the property (house, garage, sheds), the location and dimensions of the proposed new construction or improvement, the distance from all proposed structures to each property line (setback dimensions), a north arrow, a graphic scale bar, the street address, and the property owner's name. For projects involving driveways or patios, the site plan must also show total impervious surface coverage as a percentage of the lot. Projects in floodplain areas must show the FEMA flood zone designation. Louisville reviewers will reject plans that are missing any of these required elements.
Can I draw my own site plan in Louisville, or do I need a licensed surveyor?: For most standard residential permit projects in Louisville - such as decks, sheds, fences, pools, and small additions - you are not required to hire a licensed surveyor or engineer to prepare the site plan. You can draw your own site plan as long as it is accurate, drawn to scale, and includes all required elements. Many homeowners use their property deed, plat map (available from the Jefferson County PVA), and a measuring tape to gather the information needed. Online tools like Site Plan Creator make it straightforward to produce a professional, to-scale site plan without specialized drafting skills. However, for larger additions, ADUs, or projects in floodplain or historic overlay areas, Louisville Metro may require stamped drawings from a licensed architect or engineer for the structural components, even if the site plan itself does not require a professional seal.
What are the setback requirements for a residential property in Louisville, KY?: Setback requirements in Louisville Metro depend on your specific zoning district, which you can look up using the Louisville Metro zoning map or the Land Development Code. For typical single-family residential zones, front setbacks generally range from 20 to 40 feet, side setbacks are usually 5 to 10 feet per side, and rear setbacks are typically 20 to 25 feet for primary structures. Accessory structures like detached garages and sheds often have reduced setbacks, sometimes as little as 3 to 5 feet from side and rear property lines. Corner lots have additional street-side setback requirements. Properties in planned development districts or traditional neighborhood districts may have different standards. Always verify your district's specific setbacks before finalizing your site plan, since building outside the required setbacks will result in permit rejection.
Where do I submit a site plan and permit application in Louisville?: Louisville Metro has moved most residential permit applications to its online Develop Louisville portal, which is the preferred and fastest submission method. You can upload your application, site plan, and supporting documents directly through the portal at louisvilleky.gov. If you prefer to submit in person, the Metro Development Center is located at 444 S. 5th Street in downtown Louisville. Staff at the Development Center can answer questions about required documents and help you determine which permit type applies to your project. For projects requiring zoning review or variance approval, you may also interact with the Louisville Metro Planning Commission. It is a good idea to call the Development Services office at (502) 574-3321 before your first visit to confirm current hours and any updated submission requirements.
What happens if I build without a permit in Louisville, KY?: Building without a required permit in Louisville Metro can result in serious consequences. If an inspector or code enforcement officer discovers unpermitted work, Louisville Metro can issue a stop-work order immediately, halting all construction. You will then be required to apply for a permit retroactively, which often involves additional fees - sometimes double the standard permit fee - and may require destructive inspections to verify that work already completed meets code. In some cases, unpermitted structures must be partially or fully demolished. Unpermitted work can also create problems when you sell your home, as title searches and home inspections often uncover permit history. Mortgage lenders and buyers may require that unpermitted work be legalized or removed before closing. The safest and most cost-effective approach is always to pull the permit before starting work.
Does Louisville allow ADUs, and what are the site plan requirements for one?: Yes. Louisville Metro has expanded its allowances for accessory dwelling units (ADUs) in recent years as part of broader housing affordability initiatives. ADUs are permitted in most single-family residential zoning districts, subject to specific standards in the Louisville Metro Land Development Code. Permitted ADU types include detached backyard cottages, garage conversions, and attached additions. Your ADU permit application must include a site plan showing the ADU's location on the lot, its setbacks from all property lines, the footprint of the primary residence, and total impervious surface coverage. The site plan must also confirm that required off-street parking is maintained. Maximum ADU size is typically capped at a percentage of the primary dwelling's floor area or an absolute square footage limit. Contact Develop Louisville or consult the Land Development Code for the current ADU standards applicable to your zoning district.
Does living in a floodplain affect my permit requirements in Louisville?: Yes, significantly. Louisville Metro has extensive areas mapped within FEMA Special Flood Hazard Areas (SFHAs) due to the Ohio River and its tributaries. If your property is in a mapped floodplain, your permit application will require additional review by Louisville Metro's floodplain administrator. Projects in SFHAs must demonstrate compliance with Louisville's floodplain management ordinance, which typically means the lowest finished floor of any new or substantially improved structure must be elevated to or above the Base Flood Elevation (BFE). You may also need a FEMA Elevation Certificate prepared by a licensed surveyor. Your site plan must identify the flood zone designation and may need to show the BFE relative to the proposed construction. You can check your flood zone status using FEMA's Flood Map Service Center at msc.fema.gov before starting your application.

How to Create a Site Plan in Louisville

Confirm Your Permit Requirements: Before drawing anything, determine whether your project requires a building permit in Louisville Metro. Visit the Develop Louisville portal at louisvilleky.gov or call Development Services at (502) 574-3321. Review the project-specific checklist for your improvement type (deck, shed, ADU, addition, pool). Also check whether your property is in a historic overlay zone or FEMA floodplain, since these trigger additional review steps that affect your timeline and documentation requirements.
Gather Your Property Information: Collect the documents you need to draw an accurate site plan. Obtain your property's plat map or survey from the Jefferson County Property Valuation Administrator (PVA) office or your closing documents. Measure the footprints of all existing structures on your lot with a tape measure. Note your lot dimensions, the distances from existing structures to each property line, and any easements shown on your plat. This information forms the foundation of your site plan.
Create Your Site Plan: Using your property measurements and plat information, create a to-scale site plan that includes: lot boundaries with dimensions, all existing structure footprints, the proposed improvement with dimensions, setback distances from all property lines, a north arrow, a graphic scale bar, and your property address. For projects requiring impervious surface calculations, compute the total coverage area. Site Plan Creator makes this step fast and straightforward, producing a professional plan that meets Louisville Metro's formatting expectations.
Submit Your Application in Louisville: Log in to the Develop Louisville online portal and create your permit application. Select the correct permit type for your project, fill in all required fields, and upload your site plan along with any additional required documents such as construction drawings or a contractor license. If you prefer in-person submission, bring printed copies to the Metro Development Center at 444 S. 5th Street, Louisville, KY 40202. Pay any applicable application fees at the time of submission.
Respond to Review Comments and Get Approved: Louisville Metro plan reviewers will examine your application and may issue comments requesting corrections or additional information. Check your Develop Louisville portal account regularly for status updates. Respond to any comments promptly by uploading revised documents. Once your application is approved, pay the remaining permit fee, download your permit, and post it visibly at your job site. Schedule required inspections through the portal at each phase of construction - foundation, framing, and final - to keep your project on track.