Setback Rules: Cambridge vs Lexington
How do setback rules rules compare between Cambridge, MA and Lexington, MA?
Lexington has fewer restrictions than Cambridge.
Cambridge, MA
Middlesex County
Cambridge Zoning Ordinance establishes front, side, and rear yard setbacks that vary by district, with dense urban districts allowing zero-lot-line development and Residence districts requiring larger yards.
View full Cambridge rules →Lexington, MA
Middlesex County
Setbacks are set by each city or town zoning bylaw under MGL c.40A. Typical residential front setbacks range 15-30 feet with side yards of 10-15 feet.
View full Lexington rules →Key Facts Comparison
| Fact | Cambridge | Lexington |
|---|---|---|
| Res A front | 15 to 25 feet | - |
| Res A side | 7.5 to 10 feet | - |
| Business districts | Often zero setback | - |
| Nonconforming | Grandfathered | - |
| Variance body | Board of Zoning Appeals | Local ZBA |
| Authority | - | MGL c.40A Zoning Act |
| Typical front setback | - | 15-30 feet |
| Typical side setback | - | 10-15 feet |
| County role | - | None - municipal only |
Highlighted rows indicate differences between cities.
Cambridge FAQ
What setback do I need for a Cambridge addition?
It depends on your zoning district; check your property in the CDD zoning map and confirm before designing.
Can I build to the lot line?
Only in certain business districts or with a variance; most residential districts require side and rear yards.
Lexington FAQ
Does Middlesex County set setbacks?
No. Setbacks are governed entirely by city or town zoning bylaws adopted under MGL c.40A.
Can I build closer with a variance?
Yes, if the local ZBA grants dimensional relief based on hardship criteria in MGL c.40A s.10.
Compare other topics
See how Cambridge and Lexington compare on other ordinance categories.
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