San Diego County, CA Parking Rules: Commercial Vehicle Restrictions (2026)

County Code Sec. 72.126, 'Parking or Standing of Commercial Vehicles,' prohibits the parking or standing on residential-area streets of commercial vehicles having a manufacturer's gross weight rating of 10,000 pounds or more. The ban does not apply when: (1) the vehicle is loading or unloading property; (2) it is parked in connection with and in aid of a service to or on a property within the residential area; (3) it is engaged in the construction, installation, repair, or maintenance of a publicly or privately owned utility facility within the residential area; (4) the area contains property used for commercial or industrial purposes and the vehicle is parked on that property or on the contiguous highway; or (5) the Board of Supervisors has by resolution permitted such parking on certain residential streets and the Road Commissioner has appropriately signed or marked them. The section defines a 'residential area' as the portion of a highway and contiguous property where, collectively within a quarter mile, the contiguous frontage is occupied by 8 or more separate dwelling units (including apartments or condominiums); a residential area may exceed a quarter mile if that dwelling-to-length ratio continues. Lighter commercial vehicles remain subject to the general 72-hour storage rule of Sec. 72.122.