Before you get quotes
Wood decks are where hardware choices matter most. The state appendix calls for fasteners that are galvanized, stainless or approved for treated lumber, and it warns that galvanized and stainless steel react with each other. Ask which coating the joist hangers and screws carry.
- Ground-contact posts
- Cedar or treated pine boards
- Hot-dipped or stainless fasteners
- A plan to re-stain
Sources: Wisconsin Uniform Dwelling Code, SPS 325 Appendix B. 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 pressure-treated & cedar decks
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.
Which wood does the state accept?
Treated Douglas fir-larch, hem-fir, SPF or southern pine, grade 2 or better, or a naturally durable species such as western red cedar.
What does staining cost?
Angi lists staining at $550 to $1,250 and sealing at $550 to $1,330 nationally.
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.