Before you get quotes
The handrail rule in Madison kicks in at more than three risers. Multi-level decks put extra load on posts and beams; the state appendix lists stairs for multiple-level decks as a concentrated load that may need engineering analysis.
- Count of risers
- Handrail and guard on open sides
- Landing at grade
- Upper and lower levels
Sources: Wisconsin Uniform Dwelling Code, SPS 325 Appendix B · City of Madison Development Services Center, Decks. 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 stairs & levels
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.
When do deck stairs need a handrail?
In Madison, with more than three risers.
Do two-level decks need engineering?
Sometimes. The state appendix lists stairs for multiple-level decks among concentrated loads that need engineering analysis.
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.