Overview
Preemption classification
Tier C — Dual preemption
Pro-housing: MBTA Communities Act (major TOD preemption affecting 177 towns near transit). Ch. 40B comprehensive permit overrides local zoning for affordable projects. Restricts locals: preempts local rent control (1994 statewide ballot measure).
Governance
Statewide
Building and zoning code adoption is mandated at the state level.
Adopted building codes
Statewide w/ amendments
City-level IBC adoptions (2)
| City | IBC | Amendment notes |
|---|---|---|
| Springfield | 2021 | |
| Worcester | 2021 |
View building-code adoption for Massachusetts →
5 of 5 codes adopted (IBC, IRC, IECC, IFC, NEC)
Profiled counties
Cities
Showing 3 of 3
| City | Population | Code | Status | Issues |
|---|---|---|---|---|
| Boston | — | Boston Zoning Code — Articles 3-85 · 9 districts | V1 Legacy | schema:v1-legacypriority:lowdata:gaps-present |
| Springfield | — | Springfield Zoning Ordinance (Articles 1-13) · 13 districts | V1 Legacy | schema:v1-legacypriority:lowdata:gaps-present |
| Worcester | — | City of Worcester Zoning Ordinance (Ordained April 2, 1991, as amended through January 13, 2026) · 23 districts | V2 ✓ | freshness:volatiledata:gaps-present |
Research status
Data quality
33%completeness1 confirmed2 not found