H 4707 Massachusetts House · 194th Legislature (2025-2026)

An Act allowing movable tiny houses as permanent residential dwellings and accessory dwelling units

This bill allows movable tiny houses (under 400 sq ft, excluding certain features) to be used as permanent primary residences or accessory dwelling units on single-family lots. It requires local towns to establish a registration system through the Registry of Motor Vehicles ($100 fee), with standards for safety, zoning (like septic systems), and building code compliance (with relaxed insulation requirements). After 180 days of residency, tiny houses must have a permanent address, utilities, and pass an inspection for a certificate of occupancy. Local governments can set stricter rules but cannot ban tiny houses outright, and may offer tax incentives for hosting them.
Bill status in committee 1 of 4 stages cleared
Introduction
Nov 2025
Committee Review
Floor Vote
Governor
Introduced Nov 6, 2025 Last action Nov 6, 2025
Floor votes

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Full legislative history

Actions timeline

Total actions
3
Key actions
2
Committee
2
Nov 6, 2025
Lower · Passed
Bill reported favorably by committee and referred to the committee on House Ways and Means
lower
Nov 6, 2025
Lower · Passed
Reported from the committee on Housing
lower
0 primary · 12 co-sponsors

Sponsors

No sponsor information available.