Zoning › State overlays › Massachusetts

Massachusetts State overlays

All 4 tracked preemption laws for Massachusetts.

Overview

All tracked preemption laws for Massachusetts. Click any law for its trigger predicate, preempted fields, and source citation.

Laws tracked
4
Preempted fields
13
Required city attrs
8
Last reviewed
2026-04-19
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Tracked laws

Massachusetts MBTA Communities Act — Multi-Family Zoning Requirement (MGL c. 40A §3A)4 fields
Effective
2021-01-14
Authority
state · scope: state:MA
ID
MA_40A_3A_MBTA_COMMUNITIES
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Massachusetts Chapter 40R — Smart Growth Zoning Overlay District (Opt-In)0 fields
Effective
2004-06-30
Authority
state · scope: state:MA
ID
MA_40R_SMART_GROWTH_OPT_IN
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Massachusetts Chapter 40A — Zoning Enabling Act (Framework)3 fields
Effective
1975-12-22
Authority
state · scope: state:MA
ID
MA_40A_ZONING_ENABLING
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Massachusetts Chapter 40B — Comprehensive Permit / Low and Moderate Income Housing Act6 fields
Effective
1969-08-23
Authority
state · scope: state:MA
ID
MA_40B_COMPREHENSIVE_PERMIT
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Required city attributes

Required city attributes

The evaluator needs these city-level facts present to resolve whether a given law's predicate fires.

  • population
  • county_population
  • subsidized_housing_inventory_pct
  • is_mbta_community
  • mbta_community_category
  • mbta_compliance_status
  • zoning_article_97_coverage
  • transit_proximity_flags.has_qualifying_mbta_stop