Quiet hours in Castro Valley, CA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
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.
Alameda County §6.60.050 prohibits operating or playing any radio, stereo, television, audio equipment, drum, musical instrument or device that produces or reproduces sound at any time of day if 'plainly audible at a distance of fifty (50) feet from such device.' The same section also prohibits loading/unloading boxes, containers, building materials, garbage cans or similar objects between 9 p.m. and 6 a.m. if it causes a noise disturbance across a residential property line. 'Plainly audible' is defined as sound detectable by a person using unaided hearing. Castro Valley uses the same daytime/nighttime split as the county: 7 a.m.-10 p.m. day, 10 p.m.-7 a.m. night.
Violation of Chapter 6.60 is a misdemeanor under §6.60.090 punishable by up to $1,000 fine and/or six months in jail per Cal. Govt. Code §25132. Alameda County Code Enforcement may issue administrative citations escalating from $100 (first), $200 (second within 12 months) to $500 (third) under Chapter 1.08. Sheriff's Office responds to active disturbances; Code Enforcement handles patterns.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Castro Valley, CA
Heavy commercial vehicles - generally over 10,000 lbs GVW or 22 feet long - cannot be parked overnight on Castro Valley residential streets, and cannot be pa...
Castro Valley, CA
Alameda County NPO §6.65.030 limits where RVs, boats and trailers may be stored on residential property in Castro Valley: only on a paved driveway/parking ar...
Castro Valley, CA
Castro Valley follows California Vehicle Code §22651 plus Alameda County parking rules. There is a 72-hour parking limit on any street; no overnight RV/overs...
Castro Valley, CA
Alameda County Code §17.52.430 limits residential fences in Castro Valley to 4 feet in the required front yard, 6 feet in side and rear yards, and 2 feet wit...
Castro Valley, CA
California's Good Neighbor Fence Act (Civil Code §841) presumes that adjoining property owners share the cost of a boundary fence equally. The County does no...
Castro Valley, CA
Alameda County zoning treats chickens as livestock requiring an Animal Fancier's Permit in residential districts. Standard R-1 households can keep up to 1 fo...
Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle quiet hours.
See how Castro Valley's quiet hours rules stack up against other locations.
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