CA Gov't Code Section 53725

(a)

Except as permitted in Section 1 of Article XIIIA of the California Constitution, no local government or district may impose any ad valorem taxes on real property. No local government or district may impose any transaction tax or sales tax on the sale of real property within the city, county or district.

(b)

Taxes permitted by Subdivision (b) of Section 1 of Article XIIIA of the California Constitution shall not be subject to the vote requirements prescribed by this Article.