Construction hours in Lowell, MA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Lowell Code Section 204-4C(8) limits erection, demolition, alteration, repair and excavation of buildings to 7:00 a.m.-6:00 p.m. on weekdays. Work outside those hours requires a Building Inspector permit issued only for urgent public-health/safety necessity (or a finding that no party would be inconvenienced). Power tools are separately barred 10 PM-7 AM (Section 204-4C(5)).
Lowell's construction-hour rule is in Section 204-4C(8) (Construction or repairing of buildings) of Chapter 204. It prohibits 'the erection (including excavation), demolition, alteration or repair of any building other than between the hours of 7:00 a.m. and 6:00 p.m. on weekdays, except in case of urgent necessity in the interest of public health and safety, and then only with a permit from the Building Inspector.' Such an emergency permit may be granted for not more than three days and renewed in three-day increments while the emergency continues. The Building Inspector may also authorize off-hours (6:00 p.m.-7:00 a.m.) work if he determines public health and safety will not be impaired and that loss or inconvenience would otherwise result to a party in interest. Two related provisions tighten nighttime work: Section 204-4C(5) (Power tools and equipment) bars use of any power tool, power saw, planer, lawn mower, or even nonpower saws/hammers between 10:00 p.m. and 7:00 a.m. where it disturbs residents; Section 204-4C(6) (Pile drivers; hammers) bars pile drivers, steam shovels, pneumatic hammers, derricks and hoists in the same 10 p.m.-7 a.m. window. Section 204-5N exempts permitted construction operations provided manufacturer mufflers and noise-reducing equipment are in proper operating condition.
First violation: written warning, cessation within 10 minutes. Second/subsequent: $100 per offense by noncriminal disposition under MGL c. 40, Section 21D; each day is a separate violation (Section 204-6). Off-hours work without the required Building Inspector permit is itself unlawful.
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