Manchester, NH Noise Ordinances: Construction Hours (2026)
Construction hours in Manchester, NH, sometimes called construction noise rules or contractor work-hour ordinances, set when contractors can run power tools, hammers, and heavy equipment.
Key Facts
- Quiet hours
- 9:00 p.m.–7:00 a.m.
- Governing section
- City Code § 94.42(F)
- Daytime standard
- Must meet § 94.10 Table A
- Variance available
- If daytime work blocks traffic
- First-offense fine
- $100
Summary
Manchester bars noisy construction work between 9 p.m. and 7 a.m. if it exceeds the city's noise-level table, under City Code Ch. 94.
Operate any construction equipment or conduct any construction activities between the hours of 9:00 p.m. and 7:00 a.m. that exceed the noise limits of § 94.10, Table A. The city may grant variances from the construction restrictions if it can be demonstrated that a construction project will interfere with traffic if completed during daytime hours.
(G) Operate any trash compacting mechanism on any motor vehicle, or engage in any trash, rubbish or garbage collection activity between the hours of 10:00 p.m. and 7:00 a.m., when such activity takes place on any premises adjacent to a residential premises.
(H) Operate or permit the operation of any motor vehicle or combination of motor vehicles at any time or place when such operation exceeds the noise limits for the category of motor vehicle and for the designated time period as specified in § 94.12, Table B.
(I) Sound any horn or other audible signal device of an automobile, motorcycle, streetcar, or other vehicle unless it is necessary as a warning to prevent or avoid a traffic accident or reasonably inform or warn of a vehicle presence.
(J) Modify or change the exhaust muffler, air intake muffler or any other sound reducing device in such a manner that the noise emitted from the motor vehicle exceeds the sound pressure levels as established in § 94.12, Table B except where permitted by state law.
(K) The noise limits in § 94.10, Table A and § 94.12, Table B notwithstanding, no person shall:
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2025 S-25: current through Ord. passed 6-3-2025).
Full Breakdown
City Code § 94.42(F) prohibits operating construction equipment or conducting construction activities between 9:00 p.m. and 7:00 a.m. if the noise exceeds the limits in the § 94.10 Table A noise-level chart. During permitted daytime hours, construction equipment is separately exempted from the numeric noise table under § 94.11(G) as long as it's operated in compliance with § 94.42(F). The city can grant a variance from the nighttime restriction if the applicant shows the project would interfere with traffic if it were instead done during the day.
Violations & Fines
First offense $100 citation, second $250, third $500, fourth and later $1,000: each day of continued violation counts as a separate offense (§ 94.43).
Frequently Asked Questions
Can construction crews work before 7 a.m. in Manchester?
Can a contractor get permission for nighttime construction noise?
Sources & Official References
Other rules in Manchester
How Manchester compares: Cities with the Strictest Construction Hours·Compare Manchester to another location·View the New Hampshire noise ordinances overview
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Construction Hours in Nearby Cities
How other cities in this county handle construction hours.