Tiny Homes: Newton vs Somerville
How do tiny homes rules compare between Newton, MA and Somerville, MA?
Newton and Somerville have similar restriction levels.
Newton, MA
Middlesex County
Tiny homes in Newton must meet MA Building Code 780 CMR and zoning minimums; generally only allowed as ADUs or primary dwellings meeting standard dwelling size.
View full Newton rules →Somerville, MA
Middlesex County
Tiny homes on foundations can qualify as ADUs in Somerville under the 2024 Affordable Homes Act. Tiny homes on wheels are treated as RVs and generally cannot be used as permanent dwellings.
View full Somerville rules →Key Facts Comparison
| Fact | Newton | Somerville |
|---|---|---|
| State Code | 780 CMR Appendix Q | - |
| Best Path | ADU under c.40A s.3A | - |
| Max ADU | 900 square feet | - |
| On Wheels | Generally not allowed | - |
| Utilities | Full connections required | - |
| Foundation tiny home | - | Allowed as ADU |
| State code | - | 780 CMR Appendix AQ |
| Max as ADU | - | 900 sq ft |
| Tiny homes on wheels | - | Not permanent dwelling |
| RV residency | - | Prohibited long-term |
Highlighted rows indicate differences between cities.
Newton FAQ
Can I park a tiny home on wheels in my Newton yard as a dwelling?
No. Tiny homes on wheels are treated as RVs and cannot be used as permanent residences in Newton residential zones.
Can I build a tiny house as an ADU in Newton?
Yes. A site-built tiny home up to 900 sf meeting 780 CMR Appendix Q can qualify as an ADU by right under state and local rules.
Somerville FAQ
Can I live in a tiny home in Somerville?
Yes on a permanent foundation as an ADU. Tiny homes on wheels cannot be permanent dwellings.
Is there a minimum size?
Appendix AQ allows dwellings as small as 120 sq ft if code compliant; Somerville follows state code.
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