Property tax rates are limited to 1% of assessed value as per Proposition 13, passed in 1978.
However, local jurisdictions can vote to impose on themselves additional levies for bonded debt–schools, sewers, roads, etc. This bumps the effective rate up to 1.1% or 1.15% or so, depending on the locality.
An effort is underway statewide to eliminate the 1% rule as Prop 13 allegedly “hamstrings” politicians’ ability to tax and spend in CA.