Boston Zoning

MFR Zone in Boston, MA

MFR zoning district rules in Boston, MA. Permitted uses, setbacks, height limits, and lot coverage requirements.

Residential District

The MFR zone in Boston, MA is a residential district. This zone requires a 10 ft front setback, 5 ft side setback, and 20 ft rear setback. Maximum building height is 55 feet (5 stories). Maximum lot coverage is 70%.

Setback Requirements

Setback TypeRequirement
Front Setback10 feet
Side Setback5 feet
Rear Setback20 feet

Boston Zoning Code. MFR (Multi-Family Residential) — allows higher density residential development. Setbacks may vary by specific MFR subdistrict.

Height Limits

Max Height
55 feet
Max Stories
5

Boston Zoning Code. MFR multifamily — 55 ft base height, up to 5 stories. Higher development possible with BPDA Article 80 review.

Lot Coverage

Max Coverage
70%

Boston Zoning Code. MFR multifamily — 70% maximum coverage. FAR (Floor Area Ratio) also governs density.

Parking Requirements

Single-family: 1–2 spaces per single-family dwelling depending on zone. Boston's dense urban neighborhoods often have limited parking. Many older Boston homes predate automobile era — no garage. On-street permit parking available in many neighborhoods. Multi-family: 0.5–1 space per unit in residential zones. Near MBTA stations, parking requirements are reduced. Boston's downtown and dense neighborhoods have very low parking minimums — often 0 for affordable housing projects.

Source: Boston Zoning Code; Massachusetts General Laws Chapter 40A Section 3; Affordable Homes Act (Chapter 150, Acts of 2024). Last verified April 5, 2026. View source

Last updated: April 5, 2026
MFR Zone in Boston, MA — Permitted Uses & Rules | PropertyZoned