Tuolumne County zoning prohibits commercial auto repair on residential parcels in Twain Harte, though incidental work on personally owned vehicles by the property owner is allowed.
Title 17 of the Tuolumne County Code limits residential zones to single-family dwellings plus listed accessory uses. Operating an auto repair business from a Twain Harte home triggers a zoning violation unless the operator obtains a home-occupation permit and a state Bureau of Automotive Repair (BAR) Auto Repair Dealer registration. Even with a home-occupation permit, customer traffic, signage, and outdoor storage of inoperable vehicles are restricted. Wrecked or unregistered vehicles count as junk under Title 9 and must be enclosed or removed. Mountain residents repairing their own vehicles are fine; charging neighbors is the line.
Running a paid repair operation, storing customer vehicles outdoors, or accumulating junk vehicles draws zoning citations and abatement orders.
See how Twain Harte's auto repair on residential property rules stack up against other locations.
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