CA Health & Safety Code Section 11834.23

(a)

Whether or not unrelated persons are living together, an alcoholism or drug abuse recovery or treatment facility that serves six or fewer persons shall be considered a residential use of property for the purposes of this article. In addition, the residents and operators of the facility shall be considered a family for the purposes of any law or zoning ordinance that relates to the residential use of property pursuant to this article.

(b)

For the purpose of all local ordinances, an alcoholism or drug abuse recovery or treatment facility that serves six or fewer persons shall not be included within the definition of a boarding house, rooming house, institution or home for the care of minors, the aged, or persons with mental health disorders, foster care home, guest home, rest home, community residence, or other similar term that implies that the alcoholism or drug abuse recovery or treatment home is a business run for profit or differs in any other way from a single-family residence.

(c)

This section shall not be construed to forbid a city, county, or other local public entity from placing restrictions on building heights, setback, lot dimensions, or placement of signs of an alcoholism or drug abuse recovery or treatment facility that serves six or fewer persons as long as the restrictions are identical to those applied to other single-family residences.

(d)

This section shall not be construed to forbid the application to an alcoholism or drug abuse recovery or treatment facility of any 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. However, the ordinance shall not distinguish alcoholism or drug abuse recovery or treatment facilities that serve six or fewer persons from other single-family dwellings or distinguish residents of alcoholism or drug abuse recovery or treatment facilities from persons who reside in other single-family dwellings.

(e)

No conditional use permit, zoning variance, or other zoning clearance shall be required of an alcoholism or drug abuse recovery or treatment facility that serves six or fewer persons that is not required of a single-family residence in the same zone.

(f)

Use of a single-family dwelling for purposes of an alcoholism or drug abuse recovery facility serving six or fewer persons shall not constitute a change of occupancy for purposes of Part 1.5 (commencing with Section 17910) of Division 13 or local building codes. However, nothing in this section is intended to supersede Section 13143 or 13143.6, to the extent those sections are applicable to alcoholism or drug abuse recovery or treatment facilities serving six or fewer residents.