10 county-level rules, plus city-specific rules for 4 cities in Sonoma County, California.
Verified from official government sources
In unincorporated Sonoma County, RVs and boats may not be parked on a County road or right-of-way for more than six consecutive hours under Sonoma County Code Sec. 18-3.10, after which the vehicle must relocate for at least 72 hours. The County does not restrict storing an RV or boat on your own private property by setback.
Sonoma County Code Sec. 18-3.10 (Parking of Oversized Vehicles and Trailers)
No person shall stop, park or leave standing any oversized vehicle or trailer on any County highway or County right-of-way for a period longer than six (6) consecutive hours, after which the oversized vehicle or trailer must be relocated for a period of at least seventy-two (72) hours.
In unincorporated Sonoma County, residential parking and driveway standards come from Zoning Code Chapter 26, Article 86. A single-family dwelling requires one covered off-street parking space, parking areas must be paved, and any new or upgraded driveway connecting to a County road needs an encroachment permit from Permit Sonoma / Sonoma Public Infrastructure.
Sonoma County Code sec. 13-31(a) (Fire Safe Standards); Pub. Res. Code sec. 4290; 14 CCR div. 1.5
No road or driveway shall have a maximum grade in excess of twenty percent (20%). No road or driveway shall have a maximum grade in excess of fifteen percent (15%), without the approval of the County Fire Chief. The County Fire Chief may approve an exception or mitigated practice for a road or driveway which include grades over fifteen percent (15%) and up to twenty percent (20%) for distances ...
On County roads in unincorporated Sonoma County, parking or standing of commercial vehicles rated 10,000 pounds gross weight or more may be prohibited in residential districts under Sonoma County Code Sec. 18-3.3(g), as allowed by California Vehicle Code Sec. 22507.5. Large commercial vehicles are also covered by the six-hour oversized-vehicle limit in Sec. 18-3.10.
Sonoma County Code Sec. 18-3.10 (Parking of Oversized Vehicles and Trailers)
No person shall stop, park or leave standing any oversized vehicle or trailer on any County highway or County right-of-way for a period longer than six (6) consecutive hours, after which the oversized vehicle or trailer must be relocated for a period of at least seventy-two (72) hours.
Street parking on County roads in unincorporated Sonoma County is governed by Sonoma County Code Chapter 18, Article III. Parking is generally allowed except where signs or curb paint prohibit it, near intersections and traffic controls, within six feet of the road center, and where the Board of Supervisors has designated no-parking or time-limited zones by resolution.
Sonoma County Code Chapter 18, Article III (Parking Regulations Generally)
No person who owns or has possession, custody or control of any vehicle shall park such vehicle upon any street, roadway or parking lot for more than a consecutive period of seventy-two (72) hours.
Unincorporated Sonoma County has no blanket overnight parking ban on all County roads. Instead, Sonoma County Code Sec. 18-3.3 allows parking to be prohibited between 2:00 a.m. and 6:00 a.m. on designated road portions, and Sec. 18-3.5 lets the Board of Supervisors create posted 'No Overnight Parking' zones by resolution.
Sonoma County Code Chapter 18, Article III (Parking Regulations Generally)
No person who owns or has possession, custody or control of any vehicle shall park such vehicle upon any street, roadway or parking lot for more than a consecutive period of seventy-two (72) hours.
Unincorporated Sonoma County has no dedicated County ordinance governing parking in EV charging spaces. The controlling rules come from California Vehicle Code Sec. 22511, which lets local authorities designate charging-only spaces and makes it unlawful to occupy a posted EV charging space unless the vehicle is connected for charging.
Permit Sonoma BPC-062, Expedited Permitting Process for Electric Vehicle Charging Stations (eff. 10/01/2017); see Gov. Code sec. 65850.7
This process provides an expedited and streamlined permitting process for qualifying EVCS systems. Once all of the documentation is correctly and fully completed and submitted, a permit will be processed and approved for issuance in a timely manner (usually 1 to 3 business days). ... a) The Building Department will conduct the plan review and inspection for EVCS installations. b) Planning Depar...
Sonoma County Code Chapter 18, Article IV declares abandoned, wrecked, dismantled, or inoperative vehicles on private or public property in the unincorporated area a public nuisance subject to abatement, under authority of California Vehicle Code Sec. 22660. Permit Sonoma Code Enforcement administers a free junk-vehicle removal program. Vehicles on public roads are handled by CHP and the Sheriff.
California Vehicle Code § 22651
(k) If a vehicle is parked or left standing upon a highway for 72 or more consecutive hours in violation of a local ordinance authorizing removal. (l) If a vehicle is illegally parked on a highway in violation of a local ordinance forbidding
On County roads in unincorporated Sonoma County, curb colors follow the statewide system in California Vehicle Code Sec. 21458 - red, yellow, white, green, and blue. Only the Public Works Director / Sonoma Public Infrastructure may apply official curb markings under County Code Sec. 18-3.2, and private address-number curb painting in the unincorporated area requires an encroachment permit.
California Vehicle Code sec. 21458
(a)(1) Red indicates no stopping, standing, or parking, whether the vehicle is attended or unattended, except that a bus may stop in a red zone marked or signposted as a bus loading zone. (2) Yellow indicates stopping only for the purpose of loading or unloading passengers or freight for the time as may be specified by local ordinance. (3) White indicates stopping for either of the following pu...
On County roads in unincorporated Sonoma County, loading and passenger-loading zones are established under Sonoma County Code Sec. 18-3.3 and marked by curb paint or signs. Stopping is for loading or unloading only and, unless otherwise posted, may not exceed 20 minutes. Yellow and white curbs carry the meanings set by California Vehicle Code Sec. 21458.
Sonoma County Code Sec. 18-3.10 prohibits parking any 'oversized vehicle' on a County road or right-of-way for more than six consecutive hours, after which it must relocate for at least 72 hours. Oversized means any motor vehicle, boat, or trailer at least 24 feet long, 90 inches high, or 96 inches wide, plus buses, trailers, trailer coaches, and recreational vehicles.
4 cities in Sonoma County have their own parking rules rules. Each link goes to that city's dedicated page with code citations.
5 verified rules • Commercial Vehicle Restrictions, Driveway Rules
4 verified rules • Commercial Vehicle Restrictions, Driveway Rules
4 verified rules • Commercial Vehicle Restrictions, Driveway Rules
7 verified rules • Abandoned Vehicles, Commercial Vehicle Restrictions
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