Do I need a permit to build a deck in Baton Rouge, LA?

Yes, in most cases you need a building permit to construct a deck in Baton Rouge. East Baton Rouge Parish Development Services requires a permit for any attached deck and for detached decks above a certain size threshold. Your permit application must include a site plan showing the deck's location, dimensions, distance from all property lines, and its relationship to the existing house. If your property sits in a FEMA Special Flood Hazard Area, you may also need to provide an elevation certificate demonstrating the deck meets base flood elevation requirements. Skipping the permit can result in stop-work orders, fines, and difficulty selling your home later. Contact Development Services at (225) 389-3144 to confirm requirements for your specific project and zoning district before breaking ground.

How much does a site plan cost in Baton Rouge?

The cost of a site plan in Baton Rouge varies depending on how you prepare it. Hiring a licensed surveyor or civil engineer to produce a full boundary and improvement survey with a site plan can run anywhere from $500 to $2,000 or more, depending on lot size and project complexity. A licensed architect may charge similar rates for plan preparation. Using an online tool like Site Plan Creator can significantly reduce that cost for straightforward residential projects such as sheds, pools, fences, or small additions. Permit fees in East Baton Rouge Parish are separate from site plan preparation costs and are typically calculated based on the estimated construction value of your project, with fees often starting around $50 to $100 for minor work and scaling up for larger projects.

How long does it take to get a building permit approved in Baton Rouge?

For standard residential projects in Baton Rouge, plan review by East Baton Rouge Parish Development Services typically takes 5 to 15 business days after a complete application is submitted. Projects that are incomplete, require corrections, or involve special circumstances can take considerably longer. If your property is in a FEMA flood zone, the review may include a floodplain administrator check that adds time. Projects in historic overlay districts such as Beauregard Town or Spanish Town require an additional Certificate of Appropriateness from the Historic Preservation Commission, which can add several weeks. Complex projects like additions or ADUs may take 4 to 8 weeks total. Submitting a complete, accurate application with a properly drawn site plan is the single best way to avoid delays.

What does Baton Rouge require on a residential site plan?

East Baton Rouge Parish Development Services expects a residential site plan to include the following: the lot's legal boundaries with dimensions and total area, a north arrow and graphic scale bar, the location and footprint of all existing structures on the property, the location and footprint of the proposed new structure or addition, setback dimensions from all property lines to both existing and proposed structures, the location of driveways and utility connections, impervious surface calculations showing existing and proposed coverage, and any easements shown on the recorded plat. For flood zone properties, you must also reference the base flood elevation and include finished floor elevation data. The plan should be legible and drawn to a recognizable scale such as 1 inch equals 20 feet or 1 inch equals 30 feet.

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

Louisiana law does not require a licensed surveyor or engineer to prepare a site plan for most routine residential permit applications in Baton Rouge. Homeowners and contractors can prepare their own site plans provided the drawing is accurate, to scale, and contains all the information required by Development Services. However, if you do not have an up-to-date survey of your property, you risk drawing incorrect lot dimensions or missing easements, which are common reasons applications get rejected. Using a recent boundary survey as the base layer for your site plan is strongly recommended. Online tools like Site Plan Creator allow you to input your lot dimensions and produce a clean, professional-looking site plan without hiring a surveyor specifically for the drawing itself.

What are the typical setback requirements in Baton Rouge for a single-family home?

Setback requirements in Baton Rouge depend on your specific zoning district under the Unified Development Code. For typical single-family residential zones, front yard setbacks generally range from 20 to 25 feet from the front property line. Side yard setbacks are commonly 5 to 7.5 feet per side for interior lots, while corner lots require a larger street-side setback of 15 to 20 feet. Rear yard setbacks for the primary structure are typically 20 to 25 feet. Accessory structures such as detached garages and sheds often have reduced setbacks, sometimes as little as 3 to 5 feet from side and rear lines. These are general ranges only. Always verify the exact setbacks for your parcel and zoning district through East Baton Rouge Parish Development Services or the online UDC before finalizing your site plan.

What happens if I build without a permit in Baton Rouge?

Building without a required permit in Baton Rouge can lead to serious consequences. East Baton Rouge Parish Development Services has the authority to issue stop-work orders, which immediately halt construction until a permit is obtained. You may be required to pay double the standard permit fee as a penalty for after-the-fact permitting. If the unpermitted work does not meet code, you could be ordered to modify or demolish the structure at your own expense. Unpermitted work can also complicate homeowner's insurance claims, void coverage, and create significant problems when you try to sell your property, since title searches and home inspections often flag unpermitted additions. It is almost always faster and cheaper to pull the permit before you build rather than deal with the consequences afterward.

Does Baton Rouge have floodplain rules that affect my site plan?

Yes, floodplain compliance is one of the most important local considerations for site plans in Baton Rouge. A significant portion of East Baton Rouge Parish lies within FEMA-designated Special Flood Hazard Areas, including AE and X-shaded zones. If your property is in one of these areas, your site plan and permit application may need to include an elevation certificate prepared by a licensed surveyor, a reference to the base flood elevation for your location, and documentation that the finished floor of any new structure meets or exceeds the required elevation. Adding impervious surface such as a pool deck or driveway extension in a flood zone can also trigger a drainage review. You can check your flood zone status at the FEMA Flood Map Service Center at msc.fema.gov before preparing your application.

Are ADUs allowed in Baton Rouge, and what site plan requirements apply?

Accessory dwelling units are permitted in Baton Rouge under the Unified Development Code, and the city-parish has been working to expand ADU allowances in recent years to address housing needs. If you plan to build a detached ADU, convert a garage, or add a carriage house, you will need a building permit and a detailed site plan. The site plan must show the ADU's footprint, its setback distances from all property lines and the primary structure, parking spaces (ADUs typically require at least one off-street parking space), utility connections, and impervious surface calculations. Lot coverage limits apply, and the ADU must fit within the maximum allowable coverage for your zoning district. Flood zone rules also apply to ADUs. East Baton Rouge Parish Development Services can provide the current ADU standards for your specific zoning district.

Where do I submit my site plan and permit application in Baton Rouge?

East Baton Rouge Parish Development Services accepts residential permit applications both online and in person. The online permitting portal is the preferred method for most residential projects and allows you to upload your site plan, construction documents, and other required materials digitally. You can also track your application status and communicate with reviewers through the portal. If you prefer in-person submission or have a complex project that benefits from a pre-application meeting, you can visit the Development Services office at 100 St. Ferdinand Street in downtown Baton Rouge. The office can be reached at (225) 389-3144. Having a complete, accurate site plan ready before you submit is the most effective way to avoid rejection and keep your review timeline as short as possible.

Site Plan Requirements in Baton Rouge, LA (Permit Guide)

By Site Plan Creator Team • May 28, 2026

Baton Rouge homeowners need a properly prepared site plan before pulling permits for decks, additions, pools, ADUs, and more. This guide covers local zoning rules, setback requirements, permit submission steps, and common pitfalls specific to Baton Rouge, Louisiana.

Site plan requirements for residential properties in Baton Rouge, Louisiana

Residential Site Plans and Permits in Baton Rouge, Louisiana

Baton Rouge is one of Louisiana's fastest-growing metro areas, and with that growth comes a steady stream of residential construction projects ranging from backyard pools and covered patios to full second-story additions and accessory dwelling units. Whether you own a classic bungalow in Mid City, a ranch home in Broadmoor, or a newer build in Shenandoah, the City-Parish of Baton Rouge requires a site plan as part of most residential permit applications. Getting that site plan right the first time can save you weeks of back-and-forth with the Development Services department and keep your project on schedule.

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

A residential site plan is a scaled, bird's-eye drawing of your property that shows the lot boundaries, existing structures, proposed construction, setbacks from property lines, driveways, utilities, and any drainage features. Baton Rouge requires site plans because the city-parish sits largely within a low-lying floodplain environment where stormwater management, impervious surface limits, and FEMA flood zone compliance are critical concerns. Reviewers at the Development Services division use your site plan to verify that your project meets the Unified Development Code (UDC), the applicable zoning district rules, and any floodplain overlay requirements before a permit is issued.

The East Baton Rouge Parish Development Services office administers residential building permits for the city-parish. Their plan review team checks submitted drawings against local ordinances and the adopted Louisiana State Uniform Construction Code, which is based on the International Building Code family published by the International Code Council.

Which Residential Projects Require a Permit and Site Plan in Baton Rouge?

Not every home improvement triggers a full permit, but the following projects almost always do:

Decks and covered patios: Any attached or detached deck, porch, or covered patio generally requires a permit. Uncovered ground-level platforms under a certain square footage may be exempt, but confirm with Development Services before starting.
Sheds and accessory structures: Detached sheds or garages over 200 square feet typically require a permit and a site plan showing placement relative to property lines.
Swimming pools and spas: In-ground and above-ground pools over 24 inches deep require a permit. A site plan must show the pool location, required barrier fencing, and distance from the house and property lines.
Fences: Fences over six feet in height, or any fence in a front yard over four feet, generally require a permit. Corner lots have additional sight-triangle restrictions.
Additions and room conversions: Any expansion of living space, including garage conversions, sunrooms, or second-story additions, requires a full building permit with a site plan.
Accessory Dwelling Units (ADUs): Baton Rouge has been expanding ADU allowances under recent UDC amendments. A site plan is mandatory and must demonstrate compliance with lot coverage limits, parking requirements, and utility connections.
Driveways and impervious surfaces: New driveways or significant expansions of paved areas may require a grading or drainage permit, especially in flood-prone zones.

Baton Rouge Zoning Quirks and Local Considerations

Baton Rouge presents a few planning realities that set it apart from most other Southern cities:

Floodplain and FEMA Flood Zone Compliance

A large portion of East Baton Rouge Parish falls within FEMA-designated Special Flood Hazard Areas (SFHAs). If your property is in an AE, AO, or X-shaded flood zone, your site plan may need to include finished floor elevation data, base flood elevation (BFE) references, and a LOMA or elevation certificate. The FEMA Flood Map Service Center is the best starting point for checking your flood zone status. Projects that add impervious surface can trigger additional drainage review.

Unified Development Code and Zoning Districts

Baton Rouge uses a Unified Development Code that consolidates zoning, subdivision, and development standards into one document. Residential zoning districts range from A1 (single-family, low density) through higher-density residential and mixed-use categories. Each district carries its own lot coverage maximums, height limits, and setback tables. The UDC is available through the Planning Commission's online portal.

Historic Districts

Neighborhoods such as Beauregard Town, Spanish Town, and portions of Mid City are subject to historic overlay controls. Projects in these areas may require a Certificate of Appropriateness from the Historic Preservation Commission before a building permit is issued, adding an extra review layer to your timeline.

Impervious Surface Limits

Many residential zoning districts cap the percentage of a lot that can be covered by impervious materials (roofs, concrete, pavers). Your site plan must calculate existing and proposed impervious coverage to demonstrate compliance, which is especially important when adding a pool deck, driveway extension, or large patio.

Typical Setback Requirements in Baton Rouge

Setbacks vary by zoning district, but the following ranges are common for single-family residential zones in East Baton Rouge Parish:

Front yard setback: 20 to 25 feet from the front property line (some older subdivisions have established building lines that differ)
Side yard setback: 5 to 7.5 feet per side for interior lots; corner lots require a larger street-side setback, often 15 to 20 feet
Rear yard setback: 20 to 25 feet for the primary structure; accessory structures are often allowed closer, typically 5 feet from the rear line
Accessory structures: Detached garages and sheds often have reduced setbacks of 3 to 5 feet from side and rear lines, subject to zoning district rules

Always verify setbacks for your specific parcel and zoning district through the Development Services office or the online UDC, as subdivision plats and overlay districts can impose stricter requirements.

The Baton Rouge Permit Submission Process

Step 1: Determine Your Zoning and Flood Zone

Before drawing anything, look up your parcel on the East Baton Rouge Parish online GIS portal to confirm your zoning district and flood zone designation. This tells you which setbacks, lot coverage limits, and overlay rules apply.

Step 2: Prepare Your Site Plan

Your site plan should be drawn to scale and include: lot dimensions and area, north arrow, scale bar, location of all existing and proposed structures, setback dimensions, driveway and utility locations, and impervious surface calculations. For most residential projects, a licensed architect, engineer, or professional land surveyor is not legally required to prepare the site plan itself, but a survey-based drawing is strongly recommended for accuracy and to avoid rejection.

Step 3: Gather Supporting Documents

Depending on your project, you may also need construction drawings, elevation certificates, drainage calculations, or an HOA approval letter.

Step 4: Submit Your Application

Baton Rouge accepts permit applications through its online permitting portal as well as in person at the Development Services office at 100 St. Ferdinand Street. Online submission is encouraged for most residential projects and allows you to track review status.

Step 5: Plan Review and Approval

Residential plan review typically takes 5 to 15 business days for straightforward projects. Complex projects, those in flood zones, or those requiring historic review can take 4 to 8 weeks or longer. Once approved, you pay permit fees and receive your permit to post on site.

Common Reasons Baton Rouge Permit Applications Get Rejected

Site plan is not drawn to scale or lacks a north arrow and scale bar
Missing setback dimensions or dimensions that do not match the zoning district requirements
Impervious surface calculations are absent or exceed the district maximum
Flood zone projects lack a current elevation certificate or BFE reference
Proposed structure encroaches on a utility easement shown on the plat
Application is missing a legal description or parcel number
Historic district projects submitted without a Certificate of Appropriateness

Start Your Baton Rouge Site Plan with Site Plan Creator

Preparing an accurate, code-compliant site plan does not have to be complicated. Site Plan Creator gives Baton Rouge homeowners and contractors an intuitive online tool to draw professional-quality site plans quickly, with the measurements, labels, and formatting that Development Services expects. Whether you are planning a backyard pool, a new shed, or an ADU, start your site plan today and move your Baton Rouge permit application forward with confidence.

Frequently Asked Questions

Do I need a permit to build a deck in Baton Rouge, LA?: Yes, in most cases you need a building permit to construct a deck in Baton Rouge. East Baton Rouge Parish Development Services requires a permit for any attached deck and for detached decks above a certain size threshold. Your permit application must include a site plan showing the deck's location, dimensions, distance from all property lines, and its relationship to the existing house. If your property sits in a FEMA Special Flood Hazard Area, you may also need to provide an elevation certificate demonstrating the deck meets base flood elevation requirements. Skipping the permit can result in stop-work orders, fines, and difficulty selling your home later. Contact Development Services at (225) 389-3144 to confirm requirements for your specific project and zoning district before breaking ground.
How much does a site plan cost in Baton Rouge?: The cost of a site plan in Baton Rouge varies depending on how you prepare it. Hiring a licensed surveyor or civil engineer to produce a full boundary and improvement survey with a site plan can run anywhere from $500 to $2,000 or more, depending on lot size and project complexity. A licensed architect may charge similar rates for plan preparation. Using an online tool like Site Plan Creator can significantly reduce that cost for straightforward residential projects such as sheds, pools, fences, or small additions. Permit fees in East Baton Rouge Parish are separate from site plan preparation costs and are typically calculated based on the estimated construction value of your project, with fees often starting around $50 to $100 for minor work and scaling up for larger projects.
How long does it take to get a building permit approved in Baton Rouge?: For standard residential projects in Baton Rouge, plan review by East Baton Rouge Parish Development Services typically takes 5 to 15 business days after a complete application is submitted. Projects that are incomplete, require corrections, or involve special circumstances can take considerably longer. If your property is in a FEMA flood zone, the review may include a floodplain administrator check that adds time. Projects in historic overlay districts such as Beauregard Town or Spanish Town require an additional Certificate of Appropriateness from the Historic Preservation Commission, which can add several weeks. Complex projects like additions or ADUs may take 4 to 8 weeks total. Submitting a complete, accurate application with a properly drawn site plan is the single best way to avoid delays.
What does Baton Rouge require on a residential site plan?: East Baton Rouge Parish Development Services expects a residential site plan to include the following: the lot's legal boundaries with dimensions and total area, a north arrow and graphic scale bar, the location and footprint of all existing structures on the property, the location and footprint of the proposed new structure or addition, setback dimensions from all property lines to both existing and proposed structures, the location of driveways and utility connections, impervious surface calculations showing existing and proposed coverage, and any easements shown on the recorded plat. For flood zone properties, you must also reference the base flood elevation and include finished floor elevation data. The plan should be legible and drawn to a recognizable scale such as 1 inch equals 20 feet or 1 inch equals 30 feet.
Can I draw my own site plan in Baton Rouge, or do I need a licensed surveyor?: Louisiana law does not require a licensed surveyor or engineer to prepare a site plan for most routine residential permit applications in Baton Rouge. Homeowners and contractors can prepare their own site plans provided the drawing is accurate, to scale, and contains all the information required by Development Services. However, if you do not have an up-to-date survey of your property, you risk drawing incorrect lot dimensions or missing easements, which are common reasons applications get rejected. Using a recent boundary survey as the base layer for your site plan is strongly recommended. Online tools like Site Plan Creator allow you to input your lot dimensions and produce a clean, professional-looking site plan without hiring a surveyor specifically for the drawing itself.
What are the typical setback requirements in Baton Rouge for a single-family home?: Setback requirements in Baton Rouge depend on your specific zoning district under the Unified Development Code. For typical single-family residential zones, front yard setbacks generally range from 20 to 25 feet from the front property line. Side yard setbacks are commonly 5 to 7.5 feet per side for interior lots, while corner lots require a larger street-side setback of 15 to 20 feet. Rear yard setbacks for the primary structure are typically 20 to 25 feet. Accessory structures such as detached garages and sheds often have reduced setbacks, sometimes as little as 3 to 5 feet from side and rear lines. These are general ranges only. Always verify the exact setbacks for your parcel and zoning district through East Baton Rouge Parish Development Services or the online UDC before finalizing your site plan.
What happens if I build without a permit in Baton Rouge?: Building without a required permit in Baton Rouge can lead to serious consequences. East Baton Rouge Parish Development Services has the authority to issue stop-work orders, which immediately halt construction until a permit is obtained. You may be required to pay double the standard permit fee as a penalty for after-the-fact permitting. If the unpermitted work does not meet code, you could be ordered to modify or demolish the structure at your own expense. Unpermitted work can also complicate homeowner's insurance claims, void coverage, and create significant problems when you try to sell your property, since title searches and home inspections often flag unpermitted additions. It is almost always faster and cheaper to pull the permit before you build rather than deal with the consequences afterward.
Does Baton Rouge have floodplain rules that affect my site plan?: Yes, floodplain compliance is one of the most important local considerations for site plans in Baton Rouge. A significant portion of East Baton Rouge Parish lies within FEMA-designated Special Flood Hazard Areas, including AE and X-shaded zones. If your property is in one of these areas, your site plan and permit application may need to include an elevation certificate prepared by a licensed surveyor, a reference to the base flood elevation for your location, and documentation that the finished floor of any new structure meets or exceeds the required elevation. Adding impervious surface such as a pool deck or driveway extension in a flood zone can also trigger a drainage review. You can check your flood zone status at the FEMA Flood Map Service Center at msc.fema.gov before preparing your application.
Are ADUs allowed in Baton Rouge, and what site plan requirements apply?: Accessory dwelling units are permitted in Baton Rouge under the Unified Development Code, and the city-parish has been working to expand ADU allowances in recent years to address housing needs. If you plan to build a detached ADU, convert a garage, or add a carriage house, you will need a building permit and a detailed site plan. The site plan must show the ADU's footprint, its setback distances from all property lines and the primary structure, parking spaces (ADUs typically require at least one off-street parking space), utility connections, and impervious surface calculations. Lot coverage limits apply, and the ADU must fit within the maximum allowable coverage for your zoning district. Flood zone rules also apply to ADUs. East Baton Rouge Parish Development Services can provide the current ADU standards for your specific zoning district.
Where do I submit my site plan and permit application in Baton Rouge?: East Baton Rouge Parish Development Services accepts residential permit applications both online and in person. The online permitting portal is the preferred method for most residential projects and allows you to upload your site plan, construction documents, and other required materials digitally. You can also track your application status and communicate with reviewers through the portal. If you prefer in-person submission or have a complex project that benefits from a pre-application meeting, you can visit the Development Services office at 100 St. Ferdinand Street in downtown Baton Rouge. The office can be reached at (225) 389-3144. Having a complete, accurate site plan ready before you submit is the most effective way to avoid rejection and keep your review timeline as short as possible.

How to Create a Site Plan in Baton Rouge

Look Up Your Zoning and Flood Zone: Before preparing any drawings, use the East Baton Rouge Parish online GIS portal to identify your parcel's zoning district and FEMA flood zone designation. Your zoning district determines setbacks, lot coverage limits, and height restrictions. Your flood zone status determines whether you need an elevation certificate or additional drainage documentation. Getting this information first prevents costly revisions to your site plan later.
Gather Your Property Survey: Locate the most recent boundary survey for your property, which should have been provided at closing. This document shows your lot's exact dimensions, easements, and legal description. Using accurate survey data as the foundation of your site plan is critical in Baton Rouge, where lot shapes can be irregular and easements for drainage or utilities are common. If you do not have a current survey, consider obtaining one before proceeding.
Draw Your Site Plan to Scale: Using your survey data, create a scaled site plan that shows all existing structures, the proposed project, setback dimensions from every property line, driveway locations, utility connections, and impervious surface calculations. A tool like Site Plan Creator makes this step straightforward for homeowners and contractors, producing a clean, professional drawing that meets East Baton Rouge Parish Development Services formatting expectations without requiring CAD software expertise.
Assemble Your Complete Application Package: Gather all documents required by Development Services for your specific project type. In addition to your site plan, this typically includes construction drawings or specifications, the property's legal description and parcel number, an elevation certificate if your property is in a FEMA flood zone, and any HOA approval letters if applicable. Historic district projects also require a Certificate of Appropriateness before the building permit can be issued. A complete package avoids the most common rejection reasons.
Submit Online or In Person: Submit your permit application through the East Baton Rouge Parish online permitting portal for the fastest processing, or bring your documents in person to the Development Services office at 100 St. Ferdinand Street. Online submission lets you track review status and respond to reviewer comments without visiting the office. Standard residential reviews take 5 to 15 business days for complete applications, though flood zone and historic district projects may take longer.
Respond to Comments and Pull Your Permit: If the plan reviewer requests corrections or additional information, respond promptly with revised documents. Once your application is approved, pay the required permit fees to receive your official permit. Post the permit visibly on your job site before construction begins, as required by East Baton Rouge Parish rules. Keep a copy of your approved site plan and permit on site throughout the project for inspection purposes.