What is Louisville-Jefferson County Metro Government and how does it affect permitting?

Louisville-Jefferson County Metro Government (Louisville Metro) was formed in 2003 when voters approved the merger of the City of Louisville and Jefferson County into a single consolidated government. This means one planning and permitting department — Louisville Metro Planning and Design Services — handles zoning, permits, and development for the entire Jefferson County area. You don't have to navigate city vs. county differences. This is similar to Nashville-Davidson County's consolidated structure.

Can I build an ADU on my Louisville property?

Yes. Louisville Metro allows accessory dwelling units on single-family lots under the Land Development Code. Maximum size is typically 900 sqft for detached ADUs. Kentucky has no statewide ADU law — Louisville Metro's local LDC governs. No owner-occupancy requirement. You'll need a building permit from Louisville Metro Planning and Design Services. MSD sewer connection fees and LG&E electrical connection fees apply for independent utility service.

What is Old Louisville and do I need special permits there?

Old Louisville is the largest contiguous preserved Victorian neighborhood in the United States — approximately 45 blocks south of downtown with over 1,400 Victorian-era structures. If your property is in Old Louisville or another locally designated historic district, you may need a Certificate of Appropriateness from the Louisville Landmarks Commission for exterior modifications. This includes roofing, window replacement, additions, and exterior alterations. Contact Louisville Metro Planning and Design Services to check your property's historic status.

What are Louisville's STR (Airbnb) requirements?

Louisville Metro requires a Short-Term Rental License for rentals of 30 days or fewer. Annual fee is approximately $250. License number must appear in all booking platform listings. Occupancy limits (2 per bedroom), noise ordinance, and safety equipment requirements apply. Kentucky's 1% state transient room tax plus Louisville Metro's 8.5% lodging tax apply to STR income.

Is Louisville in a flood zone?

Many Louisville properties near the Ohio River, Beargrass Creek, and other waterways are in FEMA-designated Special Flood Hazard Areas. The 1937 Ohio River flood was catastrophic for Louisville — the Ohio reached 57 feet above flood stage. Check the FEMA Flood Map Service Center for your property's designation. MSD (Metropolitan Sewer District) administers stormwater and floodplain management for Louisville Metro. Properties in SFHA require flood insurance with federally-backed mortgages.

Can I Build?

Can I Build Second Story Addition in Louisville, KY? (2026)

Find out if you can build a second story addition in Louisville, KY. Rules, permit requirements, costs, and next steps.

Conditional

Adding a second story in Louisville, KY is possible in most zones, subject to height limits and structural permit requirements.

A second story addition is one of the most complex home improvement projects in Louisville, KY. It requires a full building permit, structural engineering review, and must comply with the height limits for your zoning district. Unlike a ground-floor addition, a second story changes the roofline and structural load path of your entire home, triggering stricter engineering requirements. In Louisville, zone height limits range from varies feet in R-1 zones — verify your zone before planning.

Second Story Addition Rules in Louisville

Second Story Addition Rules in Louisville: Building permit required: Yes — all second story additions require a permit. Example height limit (R-1): varies feet. Structural engineering drawings required. Setbacks apply to the full structure height.

Costs & Fees

Contact the local building department for current permit fees. Budget separately for structural engineering.

Next Steps

Next steps for adding a second story in Louisville: 1. Hire a structural engineer to assess your existing foundation and framing capacity. 2. Confirm your zone height limit and verify the addition meets all setback requirements. 3. Submit full structural plans and permit application to the local building department. 4. Inspections required at foundation reinforcement, framing, shear panels, and final.

View Full Second Story Addition Rules Second Story Addition Permit Requirements

Louisville Metro Planning and Design Services

Phone: (502) 574-3321 · Verified July 5, 2026 · Source

Website: https://louisvilleky.gov/government/develop-louisville

Online Permits: https://louisvilleky.gov/government/construction-review

Frequently Asked Questions

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Source: Louisville Metro Planning and Design Services — Building Regulations. Last verified April 6, 2026. View source

Last updated: April 6, 2026

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