MA
Massachusetts Building Codes
Current base code, county-level adoption data, special-zone overlays, and source links for restoration contractors.
Counties
14
ZIPs
714
Special zones
1086
Local amendments
0
Current State Code
Verified state-level adoption record from SkyCanvass jurisdiction data.
Adoption model
statewide
Base code
irc_2021_ma
Effective date
2023-07-01
Next update
Not scheduled
Massachusetts Building Code (780 CMR) based on 2021 I-Codes with MA amendments. Statewide mandatory. Administered by BBRS. Climate Zones 5A/6A. Ice barrier required. Stretch energy code option. 14 counties.
County Guides
County pages include local code editions, amendment flags, and jurisdiction-specific links.
Barnstable County
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Berkshire County
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Bristol County
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Dukes County
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Essex County
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Franklin County
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Hampden County
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Hampshire County
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Middlesex County
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Nantucket County
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Norfolk County
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Plymouth County
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Suffolk County
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Worcester County
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