Retaining walls over 4 feet, measured from the bottom of the footing to the top, need a building permit and engineered plans under 780 CMR across Essex County. Walls holding back a surcharge need engineering at any height.
The Massachusetts State Building Code (780 CMR) requires a building permit for any retaining wall more than 4 feet high measured from the bottom of the footing to the top of the wall, plus stamped plans from a registered engineer. Walls retaining a surcharge, such as a driveway or slope above, need engineering regardless of height. Salem, Haverhill, Andover, and neighboring towns enforce this at permitting and require drainage and setback compliance. Shorter landscape walls still must not divert water onto abutters.
Building an over-4-foot wall without a permit and engineered plans triggers a stop-work order and fines. An unstable or failing wall must be rebuilt to code, and water diverted onto a neighbor supports a nuisance claim.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Essex County, MA
Light trespass, a neighbor's glare spilling onto your property, is controlled by town outdoor-lighting bylaws across Essex County, not by state law. Fixtures...
Essex County, MA
Massachusetts has no statewide dark-sky law, so night-sky protection in Essex County comes from town outdoor-lighting bylaws. Rowley, Rockport, and other com...
Essex County, MA
Parks in Essex County close at night. State conservation land follows a dawn-to-dusk rule under 302 CMR 12.03, and each town sets matching hours for its own ...
Essex County, MA
Massachusetts has no statewide juvenile curfew, and Essex County has no county code. A few towns keep local nighttime curfews, but the state's high court lim...
Essex County, MA
Commercial drone work anywhere in Essex County runs under the FAA's Part 107 rule. Massachusetts adds no county permit; operators hold a Remote Pilot Certifi...
Essex County, MA
Recreational drone flying across Essex County follows federal FAA rules, not a county code. Fly under 400 feet, within sight, pass the free TRUST test, and r...
See how Essex County's retaining walls rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.