Napa, CA Parking Rules: Driveway Rules (2026)

Napa regulates driveways at three layers. (1) Title 17 zoning — parking facility standards: NMC Chapter 17.54 (Parking) sets minimum off-street parking ratios by land use, dimensional standards for spaces, aisles, and driveways, and surfacing requirements. The minimum driveway length for single-family detached and similar residential uses where the driveway is used to satisfy a required parking space is 20 feet, measured from the back of the public right-of-way to the face of a roll-up garage door or carport. NMC §17.54.170 (Parking facility requirements) specifies surfacing, drainage, and design rules. (2) Title 17 zoning — setback storage: the Zoning Ordinance prohibits parking or storing any motor vehicle, motor home, recreational vehicle, boat, trailer, airplane, vehicle parts, or salvaged/building materials in any required front or side setback. Front-yard vehicle parking is allowed only on the approved driveway surface, not on bare dirt, lawn, or unimproved gravel. (3) Public Works / right-of-way: cutting a new curb to install a driveway approach, widening an existing curb cut, or modifying the sidewalk in the public right-of-way requires an encroachment permit from the Napa Public Works Department. The driveway approach must conform to the City of Napa Standard Specifications and Standard Drawings (street standards). (4) State accessibility: under California Vehicle Code §22500(l), no vehicle may stop, stand, or park in front of a curb that has been cut down, lowered, or constructed to provide wheelchair accessibility, even in front of one's own home. (5) Building Code: new construction and ADUs are subject to the California Building Code and CALGreen as adopted in NMC Title 15, including driveway slope, accessibility, and stormwater controls.