Unincorporated Alameda County sets minimum front, side, and rear yard setbacks by zoning district under Title 17. Cities like Oakland, Fremont, Berkeley, Hayward, and Livermore adopt their own standards.
Alameda County Code Title 17 (Zoning) governs setbacks in unincorporated areas including Castro Valley, San Lorenzo, Ashland, Cherryland, and Sunol. Typical R-1 single-family zones require 20-foot front setbacks, 5-foot side setbacks, and 20-foot rear setbacks, though requirements vary by specific zone (R-1-CSU, R-S, etc.). Corner lots must observe street-side setbacks. ADUs have reduced setbacks under state law (4 feet side and rear per Gov Code 65852.2). Variances require findings by the County Board of Zoning Adjustments. Nonconforming structures may remain but cannot be expanded into required setbacks. Hillside properties in Castro Valley canyons have additional setback requirements tied to slope stability and fire access.
Contact your local code enforcement office for specific penalty information.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Castro Valley, CA
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 so...
Castro Valley, CA
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...
Castro Valley, CA
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...
Castro Valley, CA
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 Saturd...
Castro Valley, CA
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 de...
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...
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