Fees
Estimated city fees
Baseline for a simple permitted deck: $150–$450 estimated city/county fees for a typical permitted residential deck in Louisville, KY
| Fee | Amount | Notes |
|---|---|---|
| Residential building permit | $150–$450 (estimated) | Louisville Metro permit fees are based on declared project valuation. A straightforward residential deck commonly falls in this range; confirm current fees with Louisville Metro Permits before filing. |
| Inspections | Included with permit; reinspection extra | Typical deck permits require footing, framing, and final inspections. Reinspection fees can apply if the site is not ready or corrections remain outstanding. |
| Floodplain or Ohio River corridor overlay review | Varies if applicable | Parcels within the FEMA-mapped Ohio River floodplain or special flood-hazard overlays may require additional floodplain-management review, elevation certificates, or design modifications before permit approval. |
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Conditions
The rules that apply
- A building permit is required for any deck attached to the dwelling because Louisville Metro administers attached decks as residential structural additions reviewed under the 2018 Kentucky Residential Code.
- A permit is required for any freestanding deck more than 30 inches above grade at any point.
- A permit is required for any freestanding deck larger than 200 square feet.
- A freestanding deck that is 200 square feet or less, no more than 30 inches above grade, not attached to the dwelling, and not serving a required exit may qualify for the KRC permit exemption, but Louisville Metro zoning setbacks and easements still apply.
- Louisville Metro uses the 2018 Kentucky Residential Code, which is Kentucky’s adoption of the 2018 IRC with state amendments, effective for most residential work in the Louisville Metro jurisdiction.
- Properties in the Ohio River floodplain corridor carry a flood-hazard overlay that can trigger additional permit review requirements even when basic deck thresholds look routine.
Documents
What you'll need to file
- Residential building permit application submitted through Louisville Metro Permits and Licenses.
- Scaled site plan showing lot lines, existing structures, proposed deck footprint, setbacks, and easements, including proximity to the Ohio River floodplain boundary if applicable.
- Construction drawings showing deck dimensions, framing layout, footing locations and depth, ledger connection detail if attached, stair and guardrail dimensions, and joist and beam sizing.
- Structural details consistent with the 2018 Kentucky Residential Code, including exterior-deck connection hardware and lateral-support requirements.
- Contractor license information or owner-builder authorization depending on who is filing.
- Floodplain elevation certificate or floodplain-management documentation if the parcel is in a mapped flood-hazard area.
Process
How the permit process works
Sequential — each step gates the next.
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Confirm whether the deck is exempt or permitted Attached decks require a permit. Freestanding decks above 30 inches or over 200 square feet require a permit. Small low freestanding decks may be exempt. If your parcel is near the Ohio River floodplain, check flood-hazard status separately before assuming standard exemption thresholds apply.
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Check setbacks, floodplain status, and site constraints Verify placement against Louisville Metro zoning setbacks, easements, and flood-hazard overlays. The Ohio River corridor floodplain can add permitting steps that do not apply in upland locations.
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Prepare 2018 Kentucky Residential Code-compliant plans Prepare a site plan and structural drawings showing footing depth, posts, beams, joists, ledger connection if attached, stairs, and guardrails. Louisville Metro reviews deck work under the 2018 KRC with Kentucky state amendments.
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Submit the permit application Submit the residential permit application and supporting plans to Louisville Metro Permits and Licenses. Accurate valuation matters because fees and reviewer expectations scale with declared scope.
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Respond to review comments Reviewers check for KRC code compliance, site placement, and submittal completeness. Correct any deficiencies and resubmit before approval is issued.
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Receive permit and post it on site After approval, pay any remaining fees and keep the permit and approved plans at the construction site during the project.
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Schedule footing, framing, and final inspections Deck permits require inspection before concrete placement, after structural framing, and at final completion. Pass all required inspections to close out the permit.
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Tools & materials
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Provenance
Code basis & official sources
Last verified 2026-04-19.
2018 Kentucky Residential Code (Kentucky adoption of the 2018 International Residential Code with Kentucky state amendments), administered by Louisville Metro Permits and Licenses.
Residential permit page: https://louisvilleky.gov/permits-and-codes/permits
If you skip the permit
- Louisville Metro can issue a stop-work order if unpermitted structural deck construction is discovered.
- You may be required to expose completed framing or footings for inspector review.
- After-the-fact permits are typically more expensive and harder to obtain than a clean pre-construction submittal.
- Unpermitted work can create insurance, resale, and lender problems when permit history is reviewed.
- Decks built in the Ohio River floodplain without proper permits and elevation documentation can create significant compliance exposure.
FAQ
Common Louisville deck permit questions
Do I need a permit to build a deck in Louisville, KY?
Usually yes. Any attached deck requires a permit, and any freestanding deck above 30 inches or over 200 square feet also requires one. A small low freestanding deck may be exempt if it is not attached to the house and does not serve a required exit.
What building code does Louisville use for deck permits?
Louisville Metro administers residential deck work under the 2018 Kentucky Residential Code, which is Kentucky’s adoption of the 2018 IRC with state amendments.
How much does a Louisville deck permit cost?
A typical residential deck commonly falls in the $150–$450 range in combined permit fees depending on declared valuation and any special review needs. Confirm current pricing with Louisville Metro Permits before filing.
Does the Ohio River floodplain affect Louisville deck permits?
Yes. Properties within the FEMA-mapped Ohio River floodplain corridor face additional floodplain-management requirements. This can mean extra review steps, elevation certificates, and design constraints that do not apply to upland parcels.
Can I build a small deck in Louisville without a permit?
Possibly. The standard path is a freestanding deck at or below 200 square feet, no more than 30 inches above grade, not attached to the dwelling, and not serving a required exit. Zoning setbacks still apply, and floodplain location adds another layer to check.
What inspections are required for a Louisville deck permit?
Typical deck permits require a footing inspection before concrete placement, a framing inspection after the structure is built, and a final inspection at completion.
How does Kentucky solar net metering affect Louisville homeowners building a deck?
Kentucky offered 1:1 net metering through 2024 for LG&E customers, but rules have been updated for new solar enrollments after that date. If you are planning a deck and also considering solar, see the Louisville solar page for the current LG&E net-metering context.
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Disclaimer: Informational only — not legal advice. Rules change; verify with Louisville permitting staff before you build.