Nampa, ID Noise Ordinances: Decibel Limits (2026)
Key Facts
- Restricted hours
- 11:00 p.m. to 7:00 a.m.
- Legal test
- Plainly audible 100+ feet away
- Applies to
- Industrial/commercial land abutting residential zones
- Construction exemption
- Requires building department waiver permit
- Penalty escalation
- 3rd offense in a year is misdemeanor
Summary
Nampa ties industrial and commercial noise to its citywide anti-noise ordinance: noise from industrial or commercial land abutting residential property can't be plainly audible in a home between 11 p.m. and 7 a.m.
Noise. Noise emanating from a commercially or industrially zoned property, which lies abutting or adjacent to residentially zoned and used property, is subject to anti-noise regulations listed in section 6-7-3 of this Code. Exception: Noise caused by construction between 11:00 p.m. and 7:00 a.m. shall be exempt from such regulations if the owner or contractor holds a special waiver permit issued by the city's building department.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 16 Update 1).
Full Breakdown
Nampa City Code § 10-1-9.A folds industrial performance standards into the general nuisance-noise rule at § 6-7-3: noise from a commercially or industrially zoned property abutting or adjacent to residentially zoned and used property must not be 'plainly audible' inside a home, business, hospital, farm, or restaurant, or 100+ feet away on a public right-of-way, between 11:00 p.m. and 7:00 a.m. Construction noise during those hours is exempt only if the contractor first obtains a special waiver permit from the city's building department. The section applies across Nampa's industrial and commercial zoning districts (IL, IH, IP, and others) under Title 10, Planning and Zoning.
Violations & Fines
A first violation is an infraction; a third violation within one year of the first conviction becomes a misdemeanor, per Nampa City Code § 6-7-6.
Frequently Asked Questions
Does Nampa cap industrial noise in decibels?
Can a Nampa factory run noisy work overnight?
Sources & Official References
Other rules in Nampa
Compare Nampa to another location·View the Idaho noise ordinances overview
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