Napa County, CA Parking Rules: Commercial & Oversized Vehicles (2026)
Key Facts
- State authority for 10,000+ lb restriction
- CVC §22507.5(a)
- Off-street parking standards
- NCC Chapter 18.110
- Compact space requirement
- Approximately 35% of required spaces (NCC §18.110.040)
- Contractor's Storage zoning
- GC, CN (w/UP), MC Lake Berryessa (w/UP); not in AP/AW/Residential
- CVC weight-class commercial vehicle
- >10,000 lbs GVWR
Summary
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.
(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 pounds or more. The ordinance or resolution relating to parking between the hours of 2 a.m. and 6 a.m. may provide for a system of permits for the purpose of exempting from the prohibition or restriction of the ordinance or resolution disabled persons, residents, and guests of residents of residential areas, including, but not limited to, high-density and multiple-family dwelling areas, lacking adequate offstreet parking facilities.
Full Breakdown
Commercial vehicle parking in unincorporated Napa County is controlled by a combination of state law and the County's zoning ordinance. 5(a) allows local authorities to restrict the parking of commercial vehicles weighing 10,000 pounds or more in residential districts; Napa County has the authority to do so but has not enacted a stand-alone county-wide weight-based on-street prohibition (the Good Neighbor Resources page restates only the State 72-hour and registration rules). 040 requires that approximately 35 percent of required parking spaces be designed for compact or small cars and addresses shared parking, bicycle parking, and parking maximums.
104 for parking and loading at new commercial development. Contractor's Storage as a commercial use is allowed in the General Commercial (GC), Commercial Neighborhood (CN), and Marine Commercial (MC) zoning districts in Lake Berryessa with a Use Permit per the County's Summary of Allowable Uses by Zoning District; it is not permitted in the Agricultural Preserve (AP), Agricultural Watershed (AW), or Residential districts. State law also gives peace officers authority to remove unregistered, abandoned, or hazardous vehicles under CVC Sections 22651 and 22669, regardless of weight class.
Violations & Fines
Commercial vehicles parked in violation of CVC §22651 (e.g., obstructing traffic, blocking driveways or hydrants, registration expired more than six months) may be removed and impounded. Off-street commercial parking violations on private property are enforced as zoning violations by Napa County Code Compliance (707-253-4675). Contractor's-yard or commercial-storage use without the required Use Permit constitutes a zoning violation subject to abatement under Title 18.
Frequently Asked Questions
Can a contractor park a dump truck on a residential street in unincorporated Napa County?
Where can I run a contractor's storage yard in the county?
Does a business have to provide its own parking?
Sources & Official References
Other rules in Napa County
California rules heatmap·Compare Napa County to another location·View the California parking rules overview
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