Do I Need a Permit to Build a Retaining Wall in Wisconsin?
Retaining wall permit requirements depend on height and location. Most Wisconsin municipalities require permits for walls over 4 feet.
Yes, you typically need a permit. Requirements vary by municipality. Check with your local building department for specifics.
Where to Apply
Permit requirements, fees, and processing times vary by municipality. Check the specific requirements for your location:
Browse all jurisdictions →Frequently Asked Questions
How tall can a retaining wall be without a permit?
Most Wisconsin municipalities allow retaining walls up to 4 feet without a building permit. Walls over 4 feet typically require a permit and engineered plans.
Does a retaining wall need an engineer?
Walls over 4 feet tall generally require engineered plans stamped by a licensed PE. Even shorter walls may need engineering if they support surcharges or are near structures.
Do I need a permit for a garden wall?
Decorative garden walls under 4 feet that do not retain soil loads typically do not require a building permit, but check local zoning for setback requirements.
Building in multiple cities?
See permit requirements for any Wisconsin municipality instantly. Compare fees, timelines, and processes side by side across your active jurisdictions.