Sonoma County, CA Parking Rules: Street Parking Limits (2026)

Sonoma County Code Sec. 18-3.2 sets the general 'No Parking Areas' for County roads in the unincorporated area. No person may stop, park, or leave a vehicle standing within a divisional island, in any signed or red-curb no-parking area, on a railway track, anywhere parking would create a traffic hazard, within 20 feet of a crosswalk at an intersection (where signed or red-painted), within 20 feet of the approach to a traffic signal or stop sign, or within six feet of the center of any road whether or not a centerline is painted. Sec. 18-3.3 lets the County prohibit parking on portions of County highways for public safety, restrict parking between 2:00 a.m. and 6:00 a.m. on designated portions, and impose two-hour, one-hour, 30-minute, or 15-minute limits (effective 9:00 a.m. to 6:00 p.m. unless otherwise posted). Sec. 18-3.5 authorizes the Board of Supervisors to establish 'No Parking' and 'No Overnight Parking' zones by resolution, effective only once signs or curb markings are in place. The Public Works Director (Sonoma Public Infrastructure) maintains and posts the official list of restricted-parking roads. Where time limits or zones are not posted, ordinary street parking is generally permitted, subject to the 72-hour maximum in Sec. 18-3.7 and the oversized-vehicle limits in Sec. 18-3.10.