Alabama — Code Adoption Summary
Adoption model: Mixed — the State Building Code has NARROW scope (state buildings, schools, hotels/motels, theaters only); most residential/commercial construction is governed by LOCAL adoption (county/city), making Alabama functionally home-rule for most projects. Last verified: 2026-07-03 Confidence: verified Primary sources: AL Division of Construction Management — https://dcm.alabama.gov/bldg_code.aspx · ICC AL
State Building Code (narrow scope only — state-owned/specific occupancies)
| Code family | Adopted edition | Notes | Source |
|---|---|---|---|
| Building | 2021 IBC | scope: state buildings, schools, hotels/motels, theaters ONLY | dcm.alabama.gov |
| Electrical (NEC) | NEC 2020 | within the narrow state scope | " |
| Mechanical / Plumbing / Fuel Gas / Fire | 2021 IMC/IPC/IFGC/IFC | within the narrow state scope | " |
| Energy | ASHRAE 90.1-2013 | dated; within the narrow state scope | " |
Critical scope limitation: the Alabama Building Commission's state code does NOT apply to most residential and commercial construction statewide. Local jurisdictions (county/city) set their own codes for everything outside the narrow state scope — and may adopt more recent editions (e.g., Baldwin County: 2024 IPC, 2023 NEC).
Adoption model & precedence
- For state-owned/specific-occupancy buildings: the state code above governs.
- For everything else (the vast majority of projects): the local county/city is the AHJ and sets its own adopted editions — confirm directly, do not assume the state figures above apply.
Major cities / counties
| Jurisdiction | Notes | Building dept. |
|---|---|---|
| Birmingham | Local adoption — confirm directly | birminghamal.gov |
| Montgomery | Local adoption — confirm directly | montgomeryal.gov |
| Baldwin County | Local adoption — 2024 IPC, 2023 NEC confirmed (ahead of state's narrow-scope figures) | baldwincountyal.gov |
| Huntsville | Local adoption — confirm directly | huntsvilleal.gov |
AHJ fallback (when local adoption is unverified)
- State baseline applies ONLY to state buildings/schools/hotels/theaters (2021 IBC, NEC 2020, 90.1-2013).
- For all other projects: there is no safe statewide default — confirm the specific county/city's adopted editions directly (similar caution to AZ/MO).
Change log
- 2026-07-03 — created; verified narrow state-code scope + local-adoption reality for most construction; Baldwin County example confirmed ahead of state figures.