Marin County, CA Home Business: Customer Traffic Restrictions (2026)

Marin County's home occupation rules in Development Code Section 22.32.100 let residents run a business from home only as long as it stays clearly secondary to the residential use. Subsection C lists eight categories of activity the County treats as incompatible with a residential neighborhood and therefore prohibited outright as home occupations, regardless of zoning district. Item seven on that list is 'any use which generates more than one client appointment at a time,' placing home-based consultants, tutors, therapists, hair stylists, and similar client-facing businesses under a hard one-appointment-at-a-time ceiling.

That customer-traffic limit sits alongside the operating standards in Subsection B, which independently require that a home occupation not impact on-street parking in the neighborhood, not be visible from the public right-of-way or neighboring properties, and generate no more than the activity customarily associated with a residence. A business booking back-to-back or overlapping appointments so that two or more clients' vehicles are parked or waiting at once exceeds both the numeric limit in C.7 and the parking-impact standard in B.4, giving the County two independent grounds to act.

A home occupation also needs a County business license under Title 5, Chapter 5.54, and may employ no more than one nonresident employee without a Conditional Use Permit under Chapter 22.48. If a business's client volume grows past what Section 22.32.100 allows, the operator's options are to scale back to one appointment at a time or apply for Conditional Use Permit approval to be evaluated as a different, more intensive land use rather than an accessory home occupation.