Building Setbacks & Zoning in Brockton, MA

Brockton maintains 106 local ordinances across all categories, and 3 of those deal specifically with building setbacks & zoning. Here is a breakdown of what the city actually requires, what is prohibited, and where Brockton falls on the strict-to-permissive spectrum compared to other cities.

Structure Height Limits

Brockton caps principal-building height by residential zone: two and a half stories or 35 feet in R-1A, R-1B and R-1C, and three stories or 45 feet in R-2, R-3 and R-4, under Table 1 of § 27-9. Accessory buildings top out at 20 feet in the R-1 districts and 30 feet in R-2 and R-3.

Key details: R-1A/B/C limit: 2½ stories or 35 feet. R-2/R-3/R-4 limit: 3 stories or 45 feet. Accessory building cap: 20 feet (R-1), 30 feet (R-2/R-3). Height bonus: Up to 6 stories/80 feet with wider yards. Exempt rooftop features: Spires, chimneys, tanks under 10% of roof.

Erecting, reconstructing or structurally altering a building past its district's height limit without the board of appeals' special permit violates § 27-8(2). Under § 27-51, the inspector of buildings may not issue a building permit for work that does not conform, and under § 27-52 no certificate of occupancy can issue for a nonconforming structure; the inspector can order an unauthorized use vacated until the building is brought into compliance.

Setback Rules

Brockton's Table 1 sets minimum yards by residential zone: a 30-foot front and 50-foot rear in R-1A, 30-foot rears in R-1B/C, 20-foot fronts and 25-foot rears in R-2 and R-3, and separate figures in R-4 for one-to-three-family versus multi-family lots. Section 27-17 lets the side yard flex around irregular lots and sets corner-lot and projection rules.

Key details: R-1A yards: 30 ft front, 50 ft rear, 20 ft side min. R-2/R-3 yards: 20 ft front, 25 ft rear, 10 ft side min. R-4 one-to-three-family: 35 ft front, 50 ft rear, 20 ft side. R-4 multi-family: 20 ft front/rear, 10 ft side. Irregular lots: Side yard may average, never below half minimum.

Erecting or enlarging a building inside the required yard, or encroaching on required open space, violates § 27-15, which bars reducing any required yard, lot area or open space below the chapter's minimum even where it is already substandard. The inspector of buildings enforces the setback under § 27-51 by withholding the building permit or certificate of occupancy until the structure conforms.

Lot Coverage Limits

Brockton limits how much of a lot buildings can cover and requires a separate green-space reserve on top of that: 25 percent minimum green space in every residential zone (R-1A through R-3), 10 percent in most commercial districts and I-1, and just 5 percent in the heavier I-2 and I-3 industrial zones, under § 27-18.

Key details: R-1A coverage cap: 20% (Table 1). R-1B/C/R-3 coverage cap: 25% (Table 1). Green space, residential: 25% minimum, R-1A through R-3. Green space, most commercial: 10% minimum (C-1, C-2, C-5, C-8). Green space, I-2/I-3: 5% minimum.

Covering more of a lot than Table 1, 2 or 3 allows, or paving over the required green-space reserve, violates § 27-18. The inspector of buildings enforces the limit at the permit stage under § 27-51 and will not sign off on a certificate of occupancy under § 27-52 for a lot that exceeds its coverage cap or falls short of its green-space minimum.

The Bottom Line

Brockton's building setbacks & zoning rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Brockton is broadly strict or permissive.

Keep in mind that Brockton 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.