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Governor Vetoes Delay of Commercial Building Code
On Friday, the Governor vetoed 2025 Assembly Bill 450, a bill that would have delayed the transition of the Commercial Building Code (CBC) in Wisconsin. The CBC regulates the standards for all commercial buildings, including multi-family residential buildings. Roughly 250 municipalities are delegated plan review communities responsible for ensuring compliance with this code through their own building plan review experts. All other municipal plans are submitted to the state for review.
Following a Wisconsin State Supreme Court ruling on administrative rule powers of the legislature, the new CBC was allowed to go into effect. The old CBC utilized 2015 International Building Code (IBC) standards, whereas the new CBC utilizes 2021 IBC standards with some Wisconsin-specific alterations. These newer standards are aimed at creating more energy efficient building requirements, updated structural load requirements, and recognizing newer building methods like mass timber and shipping containers.
The Wisconsin Department of Safety and Professional Services (DSPS) initially was set to implement the new CBC on September 1st but delayed that implementation to November 1st following consultation with industry stakeholders. Assembly Bill 450 would have further delayed the implementation of the new CBC to April 1, 2026. The League was neutral on the bill and noted the burden on municipal plan reviewers who may be reviewing plans under two different codes simultaneously.
To learn more about the new CBC and its impact on municipalities and economic development across Wisconsin, we invite League members to join us at tomorrow’s virtual Member Roundtable. The Roundtable takes place on the second Tuesday of each month at noon, and this month, DSPS Secretary Hereth will join us to discuss the CBC.
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