Permit check for West Allis
West Allis code section 13.05 requires a permit for most building work. It exempts decks under 25 square feet that are within 4 feet of grade, and replacing deck boards, stairs, guards or handrails on an existing deck. The owner is responsible for making sure a required permit is obtained, even when an agent applies.
Sources: City of West Allis Code of Ordinances, 13.05 Permits · Wisconsin Uniform Dwelling Code, SPS 325 Appendix B. Checked November 9, 2026. Confirm current requirements with your building inspector.
Composite Decks for a West Allis home
Composite boards still sit on a wood frame, and each brand publishes its own joist spacing and gapping rules. Wisconsin’s deck appendix asks for a label showing ASTM D7032 compliance and warns that a composite member may not match the capability of the same size in wood. Ask to see the label on the product you pick.
Name the composite line you like and ask which joist spacing the frame will use.
Sources: Wisconsin Uniform Dwelling Code, SPS 325 Appendix B. Checked November 9, 2026. Confirm current requirements with your building inspector.
More for West Allis
Questions
Do I need a permit for composite decks in West Allis?
West Allis code section 13.05 requires a permit for most building work. It exempts decks under 25 square feet that are within 4 feet of grade, and replacing deck boards, stairs, guards or handrails on an existing deck. The owner is responsible for making sure a required permit is obtained, even when an agent applies.
What does it cost?
The Wisconsin Homeowners Guide lists mid-grade composite at $45 to $65 per square foot installed. These are published estimates, not quotes.
Who does the work?
No. This site takes deck requests from Milwaukee-area homeowners and passes them to independent deck builders. You agree on price and scope with the builder directly, and a match is not guaranteed.