6 county-level rules, plus city-specific rules for 1 city in Napa County, California.
Verified from official government sources
Napa County's Good Neighbor guidance directs that RVs, campers, boats, and trailers be stored on private property on paved surfaces, not on the street; under Napa County Code Section 15.40.0230(B) a trailer or mobilehome in dead storage may not be parked on any public or private street for more than 48 hours, and state law (CVC §22651(k)) allows removal of any vehicle left on a highway for 72+ consecutive hours.
Napa County Code §15.40.0230(B) (Location restrictions--Dead storage or temporary use permit)
A trailer or mobilehome in dead storage shall not be stored in any front or side yard setback required by this chapter, or any applicable county ordinance or state law, nor shall any such vehicle be parked upon any public or private street for a period in excess of forty-eight hours. When in dead storage, all trailers and similar vehicles shall meet the minimum requirements of the state, and no...
Driveways in unincorporated Napa County are regulated through Napa County Code Title 12 (Streets, Sidewalks, and Public Places) for encroachment permits at the public-right-of-way connection, Title 18 (Zoning) for driveway location and parking surface standards, and Title 15 (Buildings) for grading and drainage when driveway construction triggers grading thresholds. An encroachment permit from Napa County Public Works is required for any new driveway approach connecting to a county road. Rural driveways in fire-hazard areas must meet California Fire Code and Napa County fire-access standards: minimum 20-foot width for two-way access roads serving multiple homes (or 12-foot one-way), maximum grade typically 16 percent, and adequate turnarounds for fire apparatus.
Napa County has not adopted a stand-alone weight-based ordinance restricting commercial vehicle parking in residential districts; the controlling rules are California Vehicle Code Section 22507.5 (authorizing such restrictions for vehicles over 10,000 lbs in residential districts) and the off-street parking and zoning provisions of Napa County Code Title 18, which require commercial uses to provide their own off-street parking and loading facilities under Chapter 18.110.
California Vehicle Code §22507.5(a)
(a) Local authorities may, by ordinance or resolution, prohibit or restrict the parking or standing of vehicles on certain streets or highways, or portions thereof, between the hours of 2 a.m. and 6 a.m., and may, by ordinance or resolution, prohibit or restrict the parking or standing, on a street or highway, of commercial vehicles having a manufacturer's gross vehicle weight rating of 10,000 ...
Napa County prohibits parking any vehicle on a county road for more than 120 consecutive hours under Napa County Code Section 10.08.150, and the California Vehicle Code authorizes peace officers to remove obstructing, illegally parked, expired-registration, and abandoned vehicles in unincorporated areas.
Napa County Road and Street Standards (2023), Section 9
9. PARKING REQUIREMENTS. (a) Off-street parking space requirements for new or modified structures and new uses shall be as required by Napa County Code Chapter 18.110 and 18.104 or as required by the County Engineer or approving body based on the required parking demand associated with the proposed use, see Detail P-1 and D-8 for design standards. Parking maximums may be set and enforced by the...
Napa County has not adopted a county-wide 2 a.m.-6 a.m. overnight parking ban under California Vehicle Code Section 22507.5; the controlling rule is Napa County Code Section 10.08.150 (no parking on a county road for more than 120 consecutive hours) and CVC Section 22651(k), which allows removal of a vehicle parked on any highway for 72 or more consecutive hours.
California Vehicle Code §22651(k)
A peace officer, as defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, or a regularly employed and salaried employee, who is engaged in directing traffic or enforcing parking laws and regulations, of a city, county, or jurisdiction of a state agency in which a vehicle is located, may remove a vehicle located within the territorial limits in which the of...
Abandoned vehicles in unincorporated Napa County are addressed under California Vehicle Code Sections 22650-22711 (Removal of Parked and Abandoned Vehicles) and Napa County Code Title 10. Vehicles left on public roads for 72 or more consecutive hours can be towed under Cal. Veh. Code 22651(o). Abandoned, wrecked, dismantled, or inoperative vehicles on private property are a public nuisance under Cal. Veh. Code 22660 and can be abated through Napa County's vehicle-abatement process. Napa County participates in the Service Authority for Abatement of Abandoned Vehicles (SAAAV) program funded by a $1 DMV registration surcharge. Report abandoned vehicles to the Napa County Sheriff non-emergency line or CHP for state highways.
Cal. Veh. Code § 22651
22651. A peace officer, as defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2 of the Penal Code, or a regularly employed and salaried employee who is engaged in directing traffic or enforcing parking laws and regulations of a city, county, or jurisdiction of a state agency in which a vehicle is located may remove a vehicle located within the territorial limits in which th...
1 cities in Napa County have their own parking rules rules. Each link goes to that city's dedicated page with code citations.
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