2013 California Standards for Accessible Design Pocket Guide

1.9.1.1.5  With respect to buildings, structures, sidewalks, curbs and related facilities not requiring a building permit, building standards published in the California Building Standards Code relating to access for persons with disabilities and other regulations adopted pursuant to Government Code Section 4450, and in effect at the time construction is commenced, shall be applicable.

Advisory 1.9.1.1.5.  Some construction such as parking lot resurfacing, re-striping parking stalls, sidewalk repair and cabinet installations do not always require building permits. In such cases, the code in place on the date of any construction would be the effective code for such work.