California Code, Health and Safety Code - HSC § 1597.45

(a) The use of a home as a small or large family daycare home shall be considered a residential use of property and a use by right for the purposes of all local ordinances, including, but not limited to, zoning ordinances.

(b) A local jurisdiction shall not impose a business license, fee, or tax for the privilege of operating a small or large family daycare home.

(c) Use of a home as a small or large family daycare home shall not constitute a change of occupancy for purposes of Part 1.5 (commencing with Section 17910) of Division 13 (State Housing Law) or for purposes of local building codes.

(d) A small or large family daycare home shall not be subject to the provisions of Division 13 (commencing with Section 21000) of the Public Resources Code.

(e) The provisions of this chapter do not preclude a city, county, or other local public entity from placing restrictions on building heights, setback, or lot dimensions of a family daycare home, as long as those restrictions are identical to those applied to all other residences with the same zoning designation as the family daycare home. This chapter does not preclude a local ordinance that deals with health and safety, building standards, environmental impact standards, or any other matter within the jurisdiction of a local public entity, as long as the local ordinance is identical to those applied to all other residences with the same zoning designation as the family daycare home. This chapter also does not prohibit or restrict the abatement of nuisances by a city, county, or city and county. However, the ordinance or nuisance abatement shall not distinguish family daycare homes from other homes with the same zoning designation, except as otherwise provided in this chapter.

(f) For purposes of this chapter, “small family daycare home or large family daycare home” includes a detached single-family dwelling, a townhouse, a dwelling unit within a dwelling, or a dwelling unit within a covered multifamily dwelling in which the underlying zoning allows for residential uses. A small family daycare home or large family daycare home is where the family daycare provider resides, and includes a dwelling or dwelling unit that is rented, leased, or owned.