Maximum lot coverage is set by municipal zoning under MGL c.40A. Residential districts commonly cap coverage at 25-40 percent; urban lots allow more.
Lot coverage, defined in most Middlesex County bylaws as the percentage of a lot occupied by buildings and sometimes impervious surfaces, is regulated at the municipal level under MGL c.40A. Suburban single-family districts typically cap coverage at 25 to 40 percent. Urban communities like Cambridge and Somerville use higher caps or Floor Area Ratio (FAR) instead. Some bylaws separately limit impervious surface to manage stormwater under MS4 permit obligations from EPA and MassDEP. Paved driveways, patios, pools, and accessory structures often count toward coverage. Exceeding caps generally requires a special permit or variance from the ZBA.
Contact your local code enforcement office for specific penalty information.
Middlesex County, MA
Middlesex County has no operational county government - it was abolished July 11, 1997 under M.G.L. c. 34B - so there is no countywide noise ordinance. Massa...
Middlesex County, MA
Middlesex County treats persistent barking as a nuisance. Animal control handles complaints. Dog licensing required statewide (MGL c.140 §155).
Middlesex County, MA
Middlesex County has no unified leaf blower ordinance. Regulations are set by individual cities and towns such as Cambridge, Newton, Arlington, and Lexington...
Middlesex County, MA
Middlesex County restricts commercial vehicle parking in residential zones. Weight and size limits apply. Overnight storage of heavy trucks prohibited.
Middlesex County, MA
Driveway rules are set by each Middlesex County city or town zoning bylaw. Cambridge, Somerville, Lowell, and Framingham regulate curb cuts, width, paving, a...
Middlesex County, MA
Winter parking bans are the dominant rule across Middlesex County. Most cities prohibit overnight on-street parking from November through April to allow snow...
Side-by-side rule comparisons with other cities in Middlesex County.
See how other cities in Middlesex County handle lot coverage limits.
See how Ayer's lot coverage limits rules stack up against other locations.
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