California Code, Health and Safety Code - HSC § 17020

(a) Except as otherwise provided in this part, the provisions of this part, building standards published in the State Building Standards Code relating to employee housing, and the other rules and regulations promulgated pursuant to the provisions of this part which relate to labor camps apply in all parts of the state and supersede any ordinance or regulations enacted by any city, county, or city and county applicable to labor camps. Rules and regulations adopted or continued in effect prior to January 1, 1980, by former Chapter 4 (commencing with Section 2610) of Part 9 of Division 2 of the Labor Code are hereby continued in effect as rules and regulations under this part until amended or repealed by the Department of Housing and Community Development.

(b) Building standards, as defined by Section 18909, shall remain in effect only until January 1, 1985, or until adopted, amended, or superseded by provisions published in the State Building Standards Code relating to employee housing pursuant to Chapter 4 (commencing with Section 18935) of Part 2.5, whichever occurs sooner.