National City, CA Business Licensing & Operations: Auto Repair on Residential Property (2026)

Section 7.20.130 of the National City Municipal Code, in the Outdoor Activities chapter of Title 7, opens with a ban: subsection A makes it unlawful to wash or repair a motor vehicle on property used for residential purposes within the city limits, except as subsections B and C allow. Subsection B allows repair on residential property owned by or rented to that vehicle owner, in an enclosed garage, within the rear yard setback, or on a paved parking space or driveway of that property. Subsection C allows washing of noncommercial motor vehicles registered to a resident of the property, provided that no liquids other than potable water drain onto a public street. The section sets location and ownership conditions rather than a permit process.

Section 7.20.140 stacks further limits on top. Notwithstanding Title 18, subsection A makes it unlawful to park, repair or store any vehicle on an unpaved portion of public or private property, though washing on an unpaved portion of private property is not prohibited if only potable water drains onto a public street. Subsection B makes it unlawful to repair, store or wash any vehicle on any paved or unpaved portion of public property. Subsection D bars parking or storing an unlicensed vehicle, a vehicle lacking current registration plates or tags, a junked, wrecked, abandoned or inoperable vehicle, or a vehicle with a certificate of nonoperation on residential property, unless it sits in a fully enclosed garage or building or behind a solid fence where it is not visible from the street or other property. A vehicle leaking fuel, oil or transmission fluid can be kept on private property only within a garage or under a covered parking area.

Repairs on the street are covered by § 7.18.070(A): except for emergency repairs necessary to move a disabled vehicle off the street, it is unlawful to perform vehicle repairs on public streets or alleys. Section 7.18.070(B) adds that detergent solutions cannot be emptied into the storm water conveyance, and the use of 'hose off' or single use engine degreasing chemicals is prohibited unless the effluent is captured and disposed of into a sanitary sewer.