Burlington's Zoning Bylaw (Article VIII, Section 850) sets dimensional and lot-coverage standards by district. Residential single-family districts (RO) cap building coverage at a percentage of total lot area, with stricter limits in smaller-lot RO districts. The town updated ADU and dimensional bylaws in early 2025 to align with the MBTA Communities Act.
Burlington's Zoning Bylaw is maintained by the Planning Department and the Board of Appeals. Article VIII (Section 850) establishes the dimensional regulations for each zoning district — including minimum lot size, frontage, front/side/rear yards, and maximum building coverage. RO single-family residential districts have tighter coverage caps than mixed-use districts. The bylaw was amended in January 2025 to add ADU provisions consistent with state law and the MBTA Communities Act, and dimensional standards were revised to allow more housing flexibility on existing lots. Property owners should verify their district from the official zoning map and check Article VIII for the exact percentages; many lots also fall within overlay districts (groundwater protection, MBTA Communities) that add further controls.
Exceeding allowed lot coverage requires a variance from the Burlington Zoning Board of Appeals. Construction without an approved variance can result in stop-work orders and removal requirements. Penalties accrue under the bylaw's enforcement section and the Massachusetts State Building Code.
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Side-by-side rule comparisons with other cities in Middlesex County.
See how other cities in Middlesex County handle lot coverage limits.
See how Burlington's lot coverage limits rules stack up against other locations.
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