Idaho Building code adoption
Statewide mandatory minimum · 3 cities tracked · 0 with amendments.
Overview
Governance
Statewide
Cities tracked
3
The state sets a single mandatory edition for every jurisdiction. Cities may only adopt more restrictive amendments, never less.
Adopted building codes (state level)
Statewide mandatory minimum. Click a code to open its full adoption atlas across all 50 states.
City-level adoption
| City | IBC edition | Amendments | Note |
|---|---|---|---|
| Boise | 2018 | — | — |
| Meridian | 2018 | — | — |
| Mountain Home | 2018 | — | — |
Quirks & watch-items
Quirks & watch-items
- Idaho skipped NEC 2020 entirely — went from 2017 → 2023
- Idaho uses UPC not IPC
- Boise selectively adopted 2021 IBC mass timber provisions while staying on 2018 for everything else
- Extensive NEC amendments (surge protection deleted, AFCI limited to bedrooms, etc.)
- "2020 Idaho Residential Code" is based on 2018 IRC — the "2020" refers to the year ID amended it