Noise Ordinances in Mountain View, CA (2026)
7 verified noise ordinances for Mountain View, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Construction Hours
Construction in Mountain View can only run 7 a.m. to 6 p.m., Monday through Friday, under City Code Sec. 8.06.05; no work is allowed on Saturdays, Sundays or recognized holidays without the chief building official's written approval. The rule covers any physical site activity, including material deliveries, and violating it is a code violation in its own right.
Mountain View Construction Noise Hours
Some RestrictionsMountain View, CA, City Code Sec. 8.06.05 (Construction Hours)
a.Hours of construction. No construction activity shall commence prior to 7:00 a.m. nor continue later than 6:00 p.m., Monday through Friday. No work is permitted on Saturday, Sunday, recognized holidays, or outside of these hours unless prior written approval is granted by the chief building official. The term "construction activity" shall include any physical activity on the construction site...
Barking Dogs
Mountain View makes it unlawful to keep a dog that disturbs neighbors with loud barking under City Code Sec. 5.62. "Loud barking" has a numeric definition: continuous barking for ten minutes, or intermittent barking for thirty minutes, that crosses a residential or commercial property line. A dog defending against a trespasser is exempt.
Mountain View Barking Dog Rules
Some RestrictionsMountain View, CA, City Code Sec. 5.62 (Barking Dogs)
It shall be unlawful for any person to harbor, keep or maintain any dog in the city which disturbs the peace and quiet of one (1) or more persons in the immediate neighborhood by loud barking or making unusual noises. "Loud barking" means barking, howling or baying by day or night continuously and/or incessantly for a period of ten (10) minutes or intermittently for one-half (½) hour or more wh...
Leaf Blower Rules
Mountain View was an early California city to ban gas-powered leaf blowers, aligning with AB 1346; only electric and battery units are permitted, with time restrictions on all blowers.
Mountain View Leaf Blower Ban
Some RestrictionsCalifornia AB 1346 (2021) - Health and Safety Code Section 43018.11
43018.11. (a) (1) By July 1, 2022, the state board shall, consistent with federal law, adopt cost-effective and technologically feasible regulations to prohibit engine exhaust and evaporative emissions from new small off-road engines, as defined by the state board. Those regulations shall apply to engines produced on or after January 1, 2024, or as soon as the state board determines is feasible...
Amplified Music & Outdoor Sound
Mountain View restricts outdoor sound devices, such as loudspeakers or sound amplifiers used to advertise or draw attention to a building, to a 150-foot audibility limit and bars them within 100 yards of any hospital or library. Outside a narrow Christmas-season exception, anyone operating one on public streets must first obtain a sound amplification permit from the community services department under City Code Sec. 3.17.
Mountain View Amplified Sound Device Rules
Some RestrictionsMountain View, CA, City Code Sec. 3.18 (Use of Sound Devices - Regulations Governing Operation)
The use, when permitted, or operation of any sound device shall be subject to the following regulations: (1)The only sounds permitted are music or human speech.(2)No such sound device shall be permitted within one hundred (100) yards of any hospital or public library.(3)The human speech and music issued shall not be profane, lewd, indecent or slanderous.(4)The volume of sound shall be controlle...
Aircraft Noise
Any project in Mountain View that would put a new building where aircraft noise from Moffett Federal Airfield reaches CNEL 65 dB or louder must grant the U.S. Government and Santa Clara County an avigation easement before the city issues a building permit, under City Code Sec. 36.06.28, adopted January 27, 2026.
Mountain View Aircraft Noise Easement Rule
Some RestrictionsMountain View, CA, City Code Sec. 36.06.28 (Avigation Easements)
Projects proposing any action that would either permit or result in the development or construction of a land use considered to be conditionally compatible with aircraft noise of CNEL 65 dB or greater, as mapped in the Moffett Federal Airfield Comprehensive Land Use Plan ("CLUP"), shall include the grant of an avigation easement to the U.S. Government and the County of Santa Clara prior to issu...
Decibel Limits
Mountain View caps stationary noise sources at 55 dB(A) daytime and 50 dB(A) between 10 p.m. and 7 a.m. as measured on any receiving residential property, City Code Sec. 21.26. Equipment exceeding the limit can keep running only with a conditional use permit from the zoning administrator, and building permit applications for such equipment must document expected noise levels.
Mountain View Stationary Equipment Noise Limits
Some RestrictionsMountain View, CA, City Code Sec. 21.26
No person shall own or operate on any property any stationary equipment, such as, but not limited to, air compressors, equipment for swimming pools, spas, or air conditioners, which produces a sound level exceeding 55 dB(A) (50 dB(A) during the night, 10 p.m. to 7 a.m.) when measured at any location on any receiving residentially used property, said measurement to utilize a sound level meter eq...
Vehicle Noise
Mountain View bans operating any vehicle equipped with a sound-amplifying device on a public street if the sound carries onto private property or reaches other people using the street, under City Code Sec. 19.20. The rule covers loudspeakers and amplified car stereos alike, with no minimum decibel threshold to trigger it.
Mountain View Vehicle Sound Amplifier Ban
Heavy RestrictionsMountain View, CA, City Code Sec. 19.20
SEC. 19.20. - Use of vehicles equipped with sound amplifiers prohibited. No person shall operate or drive any vehicle or cause any vehicle to be operated or driven, or otherwise used, on any public street, which vehicle is equipped with a sound amplifying device or other machine or device for the production or reproduction of sound, which causes sound to carry onto private property or causes so...
Looking for Santa Clara County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mountain View city rules.
Noise Ordinances in Santa Clara County →