States Where Counties Can Choose Not to Use the State-Adopted Building Code
Based on state law summaries, building code statutes, and local government authority:
| State | Notes |
|---|---|
| Alabama | Counties may adopt the state building code, but adoption is optional in unincorporated areas. |
| Alaska | Counties/boroughs can decide whether to adopt state building codes. Many rural areas do not enforce them. |
| Arizona | Counties may adopt or not adopt the state building code; enforcement is up to local government. |
| Colorado | Counties can choose to adopt or modify codes; some rural counties do not enforce the statewide code. |
| Idaho | State building codes are advisory for counties; adoption is optional. |
| Kansas | Counties may adopt building codes; many rural counties have no formal code enforcement. |
| Mississippi | Counties may choose whether to adopt the state building code; not mandatory outside municipalities. |
| Missouri | County adoption of building codes is optional; state codes exist for cities only. |
| Montana | Counties can adopt codes but are not required to enforce the state code. |
| Nebraska | Counties may adopt codes voluntarily; rural counties often do not enforce state codes. |
| New Mexico | Counties may adopt or not adopt the state building code. |
| South Carolina | Counties may adopt the state code; adoption outside cities is optional. |
| Texas | Most counties in unincorporated areas are not required to use the state building code; local adoption is optional. |
| Utah | Counties may adopt state codes or choose not to enforce them in rural areas. |
| Wyoming | Adoption of the state building code is optional for counties; largely advisory. |