Massachusetts legalized ADUs.
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Instant answers on permits, local bylaws, and consistency with state law — powered by real data from 293 towns.

1,224
ADUs Approved
293
Towns Tracked
75%
Approval RateShare of 2025 applications approved in 2025

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Homeowners, builders, and policy analysts across Massachusetts use ADU Pulse to navigate the post-Chapter 150 landscape. Our data powers research by housing advocates and is referenced in municipal planning discussions.

293
Towns Covered
28
Bylaws Analyzed
10
AG Decisions Tracked
Data: EOHLC ADU Survey Feb 2026 (293 of 351 MA municipalities). Population: Census ACS 2024. Approval rate = share of 2025 applications approved in 2025.