4 county-level rules, plus city-specific rules for 1 city in Napa County, California.
Verified from official government sources
Unincorporated Napa County regulates RV and boat parking on private property through Napa County Code Title 18 (Zoning) general regulations on outdoor storage and through Title 10 (Vehicles and Traffic) for parking on public roads. RVs and boats may generally be parked on a private residential parcel behind the front-yard setback line or in a side/rear yard, screened from public view where required by the zoning district. Living in a parked RV is prohibited except as authorized temporary construction housing during an active building permit, or under disaster-declaration provisions. Parking an RV or boat trailer overnight on a public road in unincorporated areas is restricted under Cal. Veh. Code Section 22651(o) and county parking standards.
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.
Commercial vehicle parking in unincorporated Napa County is regulated through Napa County Code Title 10 (Vehicles and Traffic), Title 18 (Zoning), and California Vehicle Code Section 22507.5, which authorizes local restrictions on overnight parking of commercial vehicles. Overnight parking of commercial vehicles (typically over 10,000 pounds gross vehicle weight, or over a certain length) on public roads in residential areas is restricted; on private property, commercial vehicle storage in residential zones is generally limited to vehicles used by the resident for their employment, with multiple commercial vehicles or commercial-fleet storage requiring a use permit. Agricultural-purpose vehicles (vineyard tractors, harvest trucks) in AP and AW zones are broadly permitted.
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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