Tiny Homes: Pepperell vs Somerville
How do tiny homes rules compare between Pepperell, MA and Somerville, MA?
Pepperell has fewer restrictions than Somerville.
Pepperell, MA
Middlesex County
Middlesex County has no tiny-home ordinance because the county government was abolished in 1997. Massachusetts adopted Appendix Q (tiny houses on permanent foundations, 400 sq ft or less) into 780 CMR effective January 1, 2020. Whether a tiny home is allowed in a specific Middlesex town depends entirely on that town's local zoning bylaw, which controls minimum dwelling size, lot area, and accessory-dwelling-unit standards.
View full Pepperell 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 | Pepperell | Somerville |
|---|---|---|
| County Government | Abolished 1997 | - |
| Appendix Q Effective | January 1, 2020 | - |
| Appendix Q Size Limit | 400 sq ft or less | - |
| On Wheels | Not covered by Appendix Q | - |
| ADU by Right | Up to 900 sq ft (Ch. 150/2024) | - |
| 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.
Pepperell FAQ
Can I build a tiny house in Middlesex County, Massachusetts?
There is no county-level tiny home rule because Middlesex County government was abolished in 1997. Massachusetts adopted Appendix Q of the state building code (780 CMR) effective January 1, 2020, which covers permanent-foundation tiny houses 400 sq ft or less. Whether you can build one depends on the local zoning bylaw of your specific town (Cambridge, Lowell, Newton, etc.); check with that town's planning department.
Are tiny homes on wheels legal in Middlesex County towns?
Generally no. Massachusetts Appendix Q only covers tiny houses on permanent foundations. Tiny houses on wheels are treated as recreational vehicles, and most Middlesex County towns do not allow RVs as a primary dwelling under their zoning bylaws. The 2024 Affordable Homes Act allows ADUs up to 900 sq ft by right in single-family zones, which gives more flexibility for accessory tiny dwellings on a foundation.
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.
Compare other topics
See how Pepperell and Somerville compare on other ordinance categories.
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