Noise Ordinances in Castro Valley, CA (2026)
5 verified noise ordinances for Castro Valley, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Castro Valley is unincorporated and operates under Alameda County Code Chapter 6.60 (Noise). §6.60.050 makes it a violation to operate any sound-producing device at any hour if the sound is 'plainly audible at a distance of 50 feet,' with stricter weekday/weekend hour windows for tools and vehicle work.
Castro Valley Quiet Hours (Alameda County)
Some RestrictionsAlameda County Code §6.60.050
Operating, playing or permitting the operation or playing of any radio, stereo, television set, audio equipment, electronic equipment, drum, musical instrument or device which produces or reproduces sound at any time of day, in such a manner that the sound is plainly audible at a distance of fifty (50) feet from such device. 'Plainly audible' is defined as any sound that can be detected by a pe...
Construction Hours
Alameda County Code §6.60.080 exempts construction activity from Chapter 6.60 only if it occurs between 7 a.m.-7 p.m. on weekdays and 8 a.m.-5 p.m. on Saturday/Sunday. Outside those windows, the 'plainly audible at 50 feet' standard in §6.60.050 applies and the work becomes a citable nuisance.
Castro Valley Construction Hours (Alameda County)
Some RestrictionsAlameda County Code §6.60.080
Construction activities, provided that they do not take place before 7 a.m. or after 7 p.m. on any day except Saturday or Sunday, or before 8 a.m. or after 5 p.m. on Saturday or Sunday.
Barking Dogs
Alameda County Code §5.08.060 makes it unlawful for any person owning, keeping, or having custody of a dog or other animal to knowingly permit or suffer that animal, by barking or other noise, to disturb any other person's peace and quiet. East Bay SPCA / Alameda County Animal Control responds.
Castro Valley Barking Dog Rules (Alameda County)
Some RestrictionsAlameda County Code §5.08.060
No person owning, keeping or having in his care or custody any dog or other animal, shall knowingly permit or suffer such dog or animal, by any barking or other noise or sound, to disturb any other person's peace and quiet. ... This section shall not be construed to prohibit the keeping of any watchdog, provided the keeper thereof takes immediate steps to quiet such dog whenever it barks and pr...
Leaf Blower Rules
Alameda County Code §6.60.050 limits use of electric or gas leaf blowers, sweepers, vacuums, mowers, trimmers, edgers and hedgers in residential areas to 7 a.m.-7 p.m. weekdays and 8 a.m.-7 p.m. weekends if plainly audible 50 feet from the device.
Castro Valley Leaf Blower & Power Tool Hours
Some RestrictionsAlameda County Code §6.60.050
Operation of electric or gasoline powered leaf blowers, sweepers, vacuums, lawn mowers, trimmers, edgers, hedgers or similar tools in residential areas between 7 p.m. and 7 a.m. on weekdays or between 7 p.m. and 8 a.m. on weekends, if the sound is plainly audible at 50 feet from the device.
Vehicle Noise
Alameda County Code §6.60.050 prohibits repairing, rebuilding, modifying or testing vehicles in residential areas between 7 p.m. and 7 a.m. if it produces sound plainly audible at 50 feet. State Vehicle Code adds modified-exhaust and engine-brake limits.
Castro Valley Vehicle Noise Rules
Some RestrictionsAlameda County Code §6.60.050
Repairing, rebuilding, modifying or testing of vehicles in residential areas between 7 p.m. and 7 a.m. if it produces sound plainly audible at 50 feet from the vehicle.
Looking for Alameda County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Castro Valley city rules.
Noise Ordinances in Alameda County →