Couple of things:<p>* Generally, in CA, unless a property changes hands, its annual property tax increase is capped at 2% per year.<p>* AIUI, SF could waive any property tax increases for residential properties that would have been triggered by flattening the existing structures in order to build much more rental housing. [0]<p>[0] I&#x27;m not convinced that there <i>would</i> be any if the property didn&#x27;t change hands, but it has been <i>years</i> since I read Prop 13.