Jamie Sternberg, Esq. November 2016 California Civil Code §1101.1-1101.9 require water-conserving plumbing fixtures be installed in residential and commercial property built before January 1, 1994. Single family residences must be brought into compliance beginning in January 1, 2014 (when a building permit is issued) with full compliance by January 1, 2017. Multifamily and …