Cambridge's Building Setbacks & Zoning: The Rules That Matter
Every city handles building setbacks & zoning a little differently. In Cambridge, Massachusetts, there are 3 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.
Lot Coverage Limits
Cambridge regulates lot coverage and Floor Area Ratio (FAR) by zoning district, with Residence A limited to modest coverage and business districts allowing much higher intensity with inclusionary housing.
Key details: Res A FAR: 0.5 to 0.75. Res A coverage: About 35 percent. Business FAR: Up to 4.0 plus. Bonuses: Inclusionary, LEED. Open space: Required complement.
Contact your local code enforcement office for specific penalty information.
Compared to other cities, Cambridge takes a harder line on lot coverage limits. The enforcement and penalty structure reflects that.
Setback Rules
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.
Key details: 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.
Contact your local code enforcement office for specific penalty information.
This is one of the stricter rules in Cambridge's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
Structure Height Limits
Cambridge limits building heights by zoning district, with Residence A capped around 35 feet and Business and mixed-use districts allowing taller buildings up to several stories with review.
Key details: Residence A cap: About 35 feet. Business districts: 45 to 250+ feet. Penthouses: Limited allowance. Measurement: Grade to highest point. Variance body: BZA or Planning Board.
Contact your local code enforcement office for specific penalty information.
This is one of the stricter rules in Cambridge's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
The Bottom Line
Cambridge is tougher than many cities when it comes to building setbacks & zoning. Out of the 3 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in Cambridge, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.
Keep in mind that Cambridge can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.