Noise Ordinances in San Mateo County, CA (2026)

San Mateo County Ordinance Code § 4.88.350

Notwithstanding any other provision of this Ordinance, it shall be unlawful for any Person to willfully or negligently make or continue, or cause to be made or continued any unreasonably loud, unnecessary, or unusual noise which disturbs the peace and quiet of any neighborhood or which causes any discomfort or annoyance to any Person of normal sensitivity residing in the area. The factors which...

San Mateo County Code § 4.88.360(e)

Noise sources associated with demolition, construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 6:00 P.M. and 7:00 A.M. weekdays, 5:00 P.M. and 9:00 A.M. on Saturdays or at any time on Sundays, Thanksgiving and Christmas.f)All mechanical devices, apparatus or equipment which are utilized for the protection or salvage o...

San Mateo County Ordinance Code § 6.04.060(c)

To suffer or permit such animal to habitually bark or meow or otherwise act to disturb the peace of any citizen or to be a public nuisance.(d)To be without proper and adequate food, water, shelter, care, and attention.(e)No Person shall possess within San Mateo County any animal designated by another jurisdiction as "potentially dangerous", "dangerous", or "vicious," or other designation based ...

Cal. AB 1346 (2021) - Small Off-Road Engines (Gas Leaf Blower Phase-Out)

Existing law imposes various limitations on the emissions of air contaminants for the control of air pollution from vehicular and nonvehicular sources. Existing law assigns the responsibility for controlling vehicular sources of air pollution to the State Air Resources Board. This bill would require the state board, by July 1, 2022, consistent with federal law, to adopt cost-effective and techn...

San Mateo County Ordinance Code § 3.68.130(b)

Sound Amplifying Equipment. It shall be unlawful for any person to operate any sound amplifying equipment as defined in section 3.68.030 in any County Park or Recreation area, or the San Francisco Fish and Game Refuge. This section shall not apply to a person operating sound amplifying equipment under a permit granted by the Parks and Recreation Department, or the San Francisco Water Department...

San Mateo County Code § 4.88.330

4.88.330 - Exterior noise standards. It is unlawful for any Person at any location within the unincorporated area of the County to create any noise... which causes the exterior noise level when measured at any single or multiple family residence, school, hospital, church, public library situated in either the incorporated or unincorporated area to exceed the noise level standards as set forth i...