Louisville Deck Permit

What's Required in Louisville

• Permit required for any deck over 30 inches above grade.
• Structural plans showing footings, joists, and beam sizing.
• Decks must meet minimum setbacks for rear and side yards.
• Handrails required for all decks with more than 3 risers.
• Post footings must be at least 30 inches deep (frost line).
• Ledger board must be bolted to the house (not nailed).

When a Deck Needs a Permit in Louisville

Whether a deck needs a building permit in Louisville usually comes down to how high and how big it is. Low, ground-level platforms are often exempt, while raised decks need a permit — in Louisville, the line is a deck floor more than 30 inches above grade (where guardrails and footings come into play). Attached decks almost always require a permit because they tie into the house’s structure, and even a freestanding deck usually needs one once it passes the size or height cutoff. Check the requirements above before you build, and note that zoning setbacks from property lines apply regardless.

Do You Need a Permit to Repair or Replace a Deck in Louisville

It depends on how much you’re changing. Swapping worn decking boards or railing on the same layout is usually treated as maintenance and often doesn’t require a permit in Louisville. But replacing the structural framing (joists, beams, posts, or footings), rebuilding the deck, enlarging it, or changing its height generally does — at that point it’s regulated like new construction. When in doubt, describe the scope to the Develop Louisville - Office of Construction Review before starting; the requirements above outline what Louisville expects.

How to Get a Deck Permit in Louisville

Frequently Asked Questions