How about: 1) Introducing a much higher tax rate for rental property income. 2) Making property taxes be reassessed every single year unless your AGI is lower than average and you are a resident. 3) Introducing a much (much!) higher tax for non-residents/foreign investors who buy a house purely for investment, and sometimes they don't even rent it out (I know a few rich folks from FAANG who bought a handful of houses…
Someone should do a "lights out" analysis in the Bay, where you count the number of homes that don't turn their lights on at night for 30 days.