We don't even need to ban single-family houses; we just need to repeal the laws that ban everything else. People who want to pay extra for SFHs will continue to

We don't even need to ban single-family houses; we just need to repeal the laws that ban everything else. People who want to pay extra for SFHs will continue to be able to do so, but crucially, people who want to put something else on their land would be able to as well. Those folks would build enough housing to accommodate at least a doubling of the state population.