| State | Current Code | Phone |
| Alabama | IBC statewide and IRC locally | 334/242-4082 |
| Alaska | IBC statewide and IRC locally | 907/269-5604 |
| Arizona | IBC statewide and IRC locally | 602/364-1003 |
| Arkansas | IBC and IRC | 501/372-4661 |
| California | IBC statewide and local codes | 916/263-0916 |
| Colorado | IBC and IRC | 720/874-6600 |
| Connecticut | IBC and IRC | 860/685-8310 |
| Delaware | IBC and IRC locally | 302/739-4394 |
| Florida | IBC and IRC | 850/487-1824 |
| Georgia | IBC and IRC | 404/679-4040 |
| Hawaii | All local codes | No state level agency |
| Idaho | IBC and IRC | 208/334-3896 |
| Illinois | IBC statewide and IRC locally | 217/557-7500 |
| Indiana | IBC and IRC | 800/457-8283 |
| Iowa | IBC and IRC | 515/725-6182 |
| Kansas | IBC and IRC | No state level agency |
| Kentucky | IBC and IRC | 502/573-0364 |
| Louisiana | IBC and IRC | 225/922-0817 |
| Maine | IBC and IRC | 207/287-6077 |
| Maryland | IBC and IRC | 410/514-7218 |
| Massachusetts | IBC and IRC | 617/727-7775 |
| Michigan | IBC and IRC | 517/241-9313 |
| Minnesota | IBC and IRC | 651/284-5005 |
| Mississippi | IBC and IRC adopted locally |
601/359-3621 |
| Missouri | IBC statewide and IRC locally | Contact local authorities |
| Montana | IBC and IRC | 406/444-3104 |
| Nebraska | IBC and IRC | 402/471-2027 |
| Nevada | IBC and IRC | 775/684-7500 |
| New Hampshire | IBC and IRC | 603/223-4289 |
| New Jersey | IBC and IRC | 609/292-6000 |
| New Mexico | IBC and IRC | 505/476-4700 |
| New York | IBC and IRC | 518/474-4073 |
| North Carolina | IBC and IRC | 919/661-5880 |
| North Dakota | IBC and IRC | Contact local authorities |
| Ohio | IBC and IRC |
614/644-2613 |
| Oklahoma | IBC and IRC | 405/522-5005 |
| Oregon | IBC and IRC | 503/378-4133 |
| Pennsylvania | IBC and IRC | 717/787-3323 |
| Rhode Island | IBC and IRC | 401/222-1268 |
| South Carolina | IBC and IRC | 803/896-4688 |
| South Dakota | IBC and IRC | 605/773-3562 |
| Tennessee | IBC and IRC adopted locally | 615/741-7190 |
| Texas | IBC and IRC | 512/305-7900 |
| Utah | IBC and IRC | 801/965-4461 |
| Vermont | IBC statewide and IRC locally | 802/479-7561 |
| Virginia | IBC and IRC | 804/371-7160 |
| Washington | IBC and IRC | 360/725-2967 |
| West Virginia | IBC and IRC | 304/558-2191 ext 53219 |
| Wisconsin | IBC statewide and local codes | 608/264-9596 |
| Wyoming | IBC statewide and IRC locally |
307/777-7288 |
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