Massachusetts enforces a uniform statewide commercial building code with no local opt-out. Municipalities may adopt more restrictive local amendments, subject to state approval.
Massachusetts enforces a uniform statewide building code (780 CMR) with no local technical amendments unless explicitly authorized. Municipalities may adopt optional energy code provisions, impacting energy compliance requirements for commercial projects.
Municipal Specialized Energy Code updates will take effect on January 1, 2026, in Beverly, Hingham, Stockbridge, and Warwick, and on July 1, 2026, in Andover. The review of the 2026 electrical code with Massachusetts amendments is set to begin in October 2025, though its adoption timeline has not been announced.