Wisconsin Permit & Stamping Requirements
Requirements vary by region, code cycle, seismic zone, and wind or snow load. Here is what typically drives design for Wisconsin projects.
What Drives Design in Wisconsin
Wisconsin projects are governed primarily by ground snow load and frost depth.
- ✓ Ground snow load per ASCE 7 and local amendments
- ✓ Frost depth and foundation design
- ✓ Roof framing capacity for drift loading
Exact code edition and local amendments vary by city and county. We confirm the specific requirements for your address before drafting.
Code in effect in Wisconsin
Wisconsin regulates homes and commercial buildings under separate state codes. One- and two-family homes follow Wisconsin's own Uniform Dwelling Code (SPS 320 to 325), not the International Residential Code. Commercial and multifamily buildings follow the Wisconsin Commercial Building Code (SPS 361 to 366), which moved to the 2021 International Codes on September 1, 2025, its first full update in about a decade.
What to plan for
- ✓ Homes are built to the Uniform Dwelling Code, Wisconsin's own residential code, so IRC details do not transfer directly.
- ✓ Many commercial plans go to the state Department of Safety and Professional Services for approval, not only to the city.
- ✓ The commercial code is uniform statewide, so cities cannot add their own construction rules, apart from limited fire protection ordinances.
Code information last verified October 2026. Codes change, so we confirm the edition in force for your address before drafting.
Frequently asked questions about Wisconsin permits
Which code applies to a house in Wisconsin?
The Wisconsin Uniform Dwelling Code, the state's own code for one- and two-family homes. It is not the International Residential Code, so drawings need to follow its specific requirements.
When did Wisconsin's commercial code change?
On September 1, 2025 the Commercial Building Code moved to the 2021 International Codes. The state accepted plans under the previous 2015-based code through the end of September 2025.
Sample Work & Other States
Foundation Plan
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Roof Framing Plan
View full portfolio › Civil / Site