10 county-level rules, plus city-specific rules for 3 cities in Solano County, California.
Verified from official government sources
Unincorporated Solano County has no specific zoning ordinance restricting where residents may park or store a recreational vehicle, boat, or trailer on their own private property. The Zoning Ordinance (Chapter 28) only addresses RVs as temporary construction security quarters and as commercial sales/storage lots, leaving residential RV and boat storage largely unregulated by the County.
Solano County Code Sec. 28.72.20(B)(1) (Temporary Residential Uses - Security Quarters during Construction)
A recreational vehicle, manufactured home or commercial coach may be used, on a temporary basis, to provide security quarters during construction of a permitted use, provided the following standards are met: (1) Building permits have been issued for the construction of the structures; (2) Only one security coach or vehicle shall be allowed on the site; (3) The security coach or vehicle shall be...
Solano County Code Section 28.94 sets driveway and parking-access standards in the unincorporated area: a two-way driveway must be at least 18 feet wide, any driveway at least 10 feet wide, and required residential parking spaces a minimum of 9 by 18 feet. Connections to County roads require an encroachment permit from the Director of Transportation.
Solano County has no general on-street ban targeting commercial trucks in residential areas; that area is governed by California Vehicle Code Section 22507.5. The County's zoning code instead limits commercial and 'large' vehicles tied to home-based businesses, capping heavy vehicles connected to cottage industries and home occupations.
Solano County Code Sec. 28.72.40(B)(2)(c)(6) (Home Occupation - Type I standards)
The use shall not generate traffic in excess of that normally associated with the residential use. Heavy commercial vehicles shall not be used in the home occupation for delivery of materials to or from the premises.
On unincorporated County roads, the main local rule is Solano County Code Section 6.5-36, which bans parking or leaving a vehicle standing on any street, highway, or public road for 72 or more consecutive hours. Beyond that, on-street parking is governed by the California Vehicle Code, enforced by the CHP and the Sheriff's Office.
Solano County Code Sec. 17-12(r) (Traffic orders - Authority of director of transportation)
The director of transportation of the county may make traffic orders establishing any of the following regulations: ... (r) Prohibiting the parking or standing of vehicles on certain streets or highways, or portions thereof, during all or certain hours of the day.
Unincorporated Solano County has no blanket overnight on-street parking ban. The closest local rule is the 72-hour continuous-parking limit in Section 6.5-36; an overnight stay well under 72 hours on a County road is not by itself a County violation, though state Vehicle Code rules and any posted signs still apply.
Solano County Code Sec. 19-230(b) (Camping or squatting prohibited on public property)
Except as may be permitted within county parks by the parks services manager, it shall be unlawful to camp or squat upon any public property owned or maintained by the county, including, without limitation, streets, roads, easements, parks, dump sites, river banks or shores, creek beds, electric utility substations, parking lots, or corporation yards. No person shall, on any public property own...
Solano County's parking ordinance (Section 28.94) does not set specific standards for electric-vehicle charging stations or EV-only parking spaces in the unincorporated area. EV charger installations are handled through the building-permit process, and accessible-parking and parking-area design follow the Building Code and County zoning standards.
Solano County Code Chapter 6.5 makes it a misdemeanor to leave an abandoned, wrecked, dismantled, or inoperative vehicle on public or private property for more than 10 days unless fully enclosed in a building. The County's Environmental Management Department abates these vehicles as public nuisances under authority of California Vehicle Code Section 22660.
Solano County Code Chapter 6.5 (Abandoned, Wrecked, Dismantled or Inoperative Vehicles)
No person shall abandon, park, store, or leave or permit the abandonment, parking, storing, or leaving of any licensed or unlicensed vehicle or parts thereof which is in an abandoned, wrecked, dismantled or inoperative condition upon any public or private property within the unincorporated area of the county for a period in excess of ten (10) days unless such vehicle or part thereof is complete...
Curb-color meanings in unincorporated Solano County are set by California Vehicle Code Section 21458, not by a County ordinance: red means no stopping, yellow is for loading, white is brief passenger loading, green is time-limited parking, and blue is disabled-only. Within the County, curb openings tie into Section 28.94 and Department of Transportation encroachment standards.
Unincorporated Solano County does not operate a city-style system of designated on-street loading zones, and the County Code contains no loading-zone ordinance. Curb-color loading rules default to California Vehicle Code Section 21458, where yellow curbs are for loading freight or passengers and white curbs for brief passenger loading.
Solano County has no general on-street ban on oversized vehicles in the unincorporated area; on-street size and weight limits come from California law. The County's zoning code does cap 'large vehicles' (defined by gross vehicle weight rating) kept on property in connection with home-based cottage industries, requiring enclosed storage.
3 cities in Solano County have their own parking rules rules. Each link goes to that city's dedicated page with code citations.
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