Norfolk County does not regulate lot coverage. Each town's zoning bylaw sets maximum coverage and Floor Area Ratio (FAR). Residential typically 25-50% coverage. Stormwater rules may apply above thresholds.
Lot coverage in Norfolk County is set by municipal zoning bylaws. Typical residential maximums vary by density: dense Brookline allows 25-40% lot coverage; suburban Quincy, Weymouth, Dedham typically allow 30-40%; rural Dover, Sherborn, Medfield often 15-25%. Floor Area Ratio (FAR) limits also apply in many towns. Lot coverage calculations typically include primary structure, accessory buildings, driveways, patios, and decks. Permeable pavers receive partial credit in some bylaws. Exceeding lot coverage requires a variance under MGL c. 40A §10. Stormwater management under 310 CMR 10.05 (Wetlands Protection) may be triggered by impervious surface thresholds.
No county enforcement. Municipal exceeding coverage: corrective action, impervious surface removal, fines $200-$1,000. Stormwater violations under 310 CMR 10.00: up to $25,000.
Wellesley, MA
Wellesley allows garage conversions to ADUs under Wellesley Zoning Bylaw §5.13 (as amended April 15, 2025 by Article 40.1) consistent with Section 8 of the M...
Wellesley, MA
Wellesley regulates ADUs under Section 5.13 of the Wellesley Zoning Bylaw. At the April 2025 Annual Town Meeting, Wellesley adopted Article 40.1 to amend its...
Wellesley, MA
Wellesley's Building Department exempts one-story sheds/accessory buildings of 100 square feet or less from a building permit, but they must still comply wit...
See how Wellesley's lot coverage limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.