Before you get quotes
Madison draws a clear line here. Deck boards can be replaced without a permit if the cost is under $500. Replacing stairs, joists, beams, columns or guardrails needs a permit or a check with Building Inspection staff. Madison also lets owners apply online for a repair permit to replace surface boards, handrails or guardrails.
- Board swap under $500
- Stair, joist or beam work
- Wobbly guardrails
- Heaved or sunk posts
Sources: Wisconsin Uniform Dwelling Code, SPS 325 Appendix B · City of Madison Development Services Center, Decks · City of Madison Development Services Center, Online permits. Checked November 9, 2026. Confirm current requirements with your building inspector.
Near Madison
Price check
See the Madison deck cost guide for 2026 published price ranges and permit fees from Madison and Verona.
Related
Questions about deck repair
Are you the deck builder?
An independent builder you hire directly. This is a Madison-area referral site, so we pass your request along; we do not build, price or guarantee anything.
Can I apply for a repair permit online?
Madison lets contractors and owner-occupants apply online for a repair or replace permit to swap surface deck boards, handrails or guardrails.
Is it safe to use a deck that moves?
Stay off it until someone qualified has looked at the posts, beams and ledger.
Is a permit needed?
In Madison, yes: the city says you need a permit to build a deck. Fitchburg requires one for decks 24 inches or more above grade, Sun Prairie wants a drawing and site plan, and Verona lists a $300 deck permit. Each Dane County community sets its own rules.