2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)

1.9.1.4.3 The building department of every city, county, or city and county within the territorial area of its city, county or city and county, where private funds are utilized.

“Building department” means the department, bureau or officer charged with the enforcement of laws or ordinances regulating the erection or construction, or both the erection and construction, of buildings.