Wisconsin
Updated 3/15/2025
Overview
Wisconsin enforces statewide building codes, with state-written codes for residential
construction and plumbing rather than adopting the standard International Codes. The
Wisconsin Uniform Dwelling Code (UDC) applies to all one- and two-family homes built
after 1980. The Wisconsin Uniform Plumbing Code governs plumbing installations
statewide.
The Wisconsin Department of Safety and Professional Services (DSPS) oversees building code adoption and enforcement, ensuring uniform standards across the state. Amendments to these codes are integrated into the state-written regulations.
The Wisconsin Department of Safety and Professional Services (DSPS) oversees building code adoption and enforcement, ensuring uniform standards across the state. Amendments to these codes are integrated into the state-written regulations.
CodePro Uses the Following Codes for Answers:
- Wisconsin Uniform Dwelling Code (UDC) (for residential application)
- Wisconsin Uniform Plumbing Code + Amendments
- 2017 National Electrical Code (NEC) + Wisconsin Amendments
Additional Resources:
State-Specific Website – Official site for Wisconsin building codes.
Wisconsin’s state-written codes apply statewide, ensuring uniform enforcement, particularly for residential construction and plumbing.
Wisconsin’s state-written codes apply statewide, ensuring uniform enforcement, particularly for residential construction and plumbing.
- Adoption Category
Statewide
- Amendments
State
Statewide Adoption
A statewide adoption means that building codes are enforced uniformly across the entire
state. The state government adopts and mandates compliance with specific building,
residential, plumbing, and electrical codes. Local jurisdictions must follow these codes
without making significant amendments, ensuring consistency in construction regulations
across the state.