Tiny Homes: Cambridge vs Newton
How do tiny homes rules compare between Cambridge, MA and Newton, MA?
Cambridge has fewer restrictions than Newton.
Cambridge, MA
Middlesex County
Tiny homes on foundations are allowed as ADUs in Cambridge under MGL c.40A s.3A. Tiny homes on wheels are treated as recreational vehicles and cannot be used as permanent dwellings under the MA State Building Code.
View full Cambridge rules →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 →Key Facts Comparison
| Fact | Cambridge | Newton |
|---|---|---|
| Tiny home on foundation | Allowed as ADU | - |
| Max ADU size | 900 sq ft | - |
| Tiny home on wheels | Not allowed as dwelling | - |
| Governing code | 780 CMR and c.40A s.3A | - |
| Park model units | Not permitted in Cambridge | - |
| 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 |
Highlighted rows indicate differences between cities.
Cambridge FAQ
Can I park a tiny house on wheels in my Cambridge driveway?
Not as a dwelling. THOWs are treated as RVs and cannot be used for long-term living under state code.
Can I build a 600 sq ft tiny home as an ADU?
Yes, with a foundation and full building permit it qualifies under the state ADU law.
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.
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