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

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

Default rule
No customer/client visits to home
Daycare exception
State-protected (H&S 1597.40 et seq.)
Services affected
Salons, tutors, therapists cannot operate in-home
Permit revocation
For repeated violations
Citations
$100/$200/$500 daily ladder

Summary

Home occupations in unincorporated Contra Costa County generally may not receive customer or client visits at the home. State-licensed family daycare is the protected exception. Violations draw escalating daily citations and can lead to permit revocation.

City-specific rules exist: Antioch, Brentwood, Oakley, and San Ramon have their own customer traffic restrictions rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

3. Traffic and deliveries. The Home Occupation may not generate vehicular traffic that exceeds the traffic normally associated with a single-family residential use. Deliveries to the Home Occupation may not exceed the frequency of deliveries and types of vehicles normally associated with residential neighborhoods. Deliveries to the Home Occupation may occur only between the hours of eight a.m. and eight p.m.

C. Clients or customers. No clients or customers are permitted at the site of the Home Occupation, except for students engaged in individual home instruction. If student visits occur, only one student may be present at one time, no more than six student visits may occur per day, and students may be present only between eight a.m. and six p.m.

D. Vehicles. One business-related vehicle, with a rated capacity of up to one ton, is permitted at the site of a Home Occupation, except that the following types of vehicles are prohibited: limousines, dump trucks, tow trucks, construction vehicles (e.g., front-end loaders, backhoes), trailers (e.g., construction trailers, chipper trailers), construction equipment (e.g., cement mixers, chippers), vehicles with a rated capacity of one ton or more, and similar vehicles.

Source: Contra Costa Ord. Code Ch. 82-4View official code

Full Breakdown

Contra Costa County's home-occupation rules for the unincorporated areas are stricter than most on one point: the default is no customer or client visits to the home at all. That closes the door on in-home salons, tutoring and therapy practices as a matter of code, though occasional meetings that create no neighborhood impact may never draw attention, a neighbor complaint can trigger a violation notice. The big exception is state-protected family daycare (H&S Code §1597.40 et seq.), which the county cannot ban. Citations run an escalating $100/$200/$500 daily ladder, and repeated violations can cost you the permit.

Frequently Asked Questions

Can I run a small daycare from my home?
Yes. State-licensed family daycare (up to 8 children small, up to 14 large) is protected as a residential use and cannot be banned by the county. Licensing is through the state Department of Social Services.
Can I occasionally meet a client at home?
Strictly no as a matter of code. Occasional meetings that generate no neighborhood impact may not be enforced, but a neighbor complaint can trigger a violation notice.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

California rules heatmap·Compare Contra Costa County to another location·View the California home business overview

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