Overview
Preemption classification
Tier B — Pro-housing moderate
ADU by-right, single-stair legalization (2025), 1-space parking cap, HB 577 zoning reforms. 'Live Free or Die' state with a surprising pro-housing preemption streak.
Governance
Statewide
Building and zoning code adoption is mandated at the state level.
Adopted building codes
Statewide
City-level IBC adoptions (1)
| City | IBC | Amendment notes |
|---|---|---|
| Manchester | 2021 |
View building-code adoption for New Hampshire →
4 of 5 codes adopted (IBC, IRC, IECC, NEC)
Profiled counties
Cities
Showing 1 of 1
| City | Population | Code | Status | Issues |
|---|---|---|---|---|
| Manchester | — | Chapter 155 of Manchester Revised Ordinances (Zoning Code) · 14 districts | V1 Legacy | schema:v1-legacypriority:lowdata:gaps-present |
Research status
Data quality
0%completeness1 not found