Walnut Creek, CA Sign Regulations: Garage Sale Signs (2026)

Garage sale signs fall under temporary noncommercial sign rules in Walnut Creek Municipal Code Chapter 10. Residents may post directional signs up to 4 square feet during active garage sale hours only, with removal required within 24 hours of sale conclusion. Placement rules: (1) only on private property with the owner's permission — posting on neighbors' yards, strangers' lawns, or business properties without consent is prohibited; (2) not on utility poles, street trees, traffic signs, street light poles, or public benches (violates WCMC and California Streets and Highways Code §1460); (3) not in public rights-of-way including parkway strips, medians, and traffic islands. The city conducts periodic sweeps of illegal signs, particularly along major arterials (Ygnacio Valley Road, Treat Boulevard, Ygnacio Valley Parkway), with sign removal and potential $50 administrative fines for chronic offenders. Online advertising through Craigslist, Facebook Marketplace, and Nextdoor has largely replaced directional signs for most residents. Garage sales themselves are limited to 2-3 events per address annually under WCMC §5-3 (see garage sale permit entry).