Thank you for the nuance! I suspected that it was much easier to actually get the housing built but wasn't clear on the migration flows.
Either way it seems like housing prices started to decline spring 2022, about 1 year after the massive spike in building permits started in earnest.
There are a lot of impediments to doing the same thing in say, the Northeast, where I am. Labor is insanely expensive. This land has been occupied by city for hundreds of years, and greenfield does not exist nearby, nor is there the appetite to Ctrl C Ctrl V build massive subdivisions, especially out of reach of transit here.
Austin proves a relationship between supply and housing prices, but it will always be incumbent upon cities and states to pave the way for massive construction of housing in times of need. I think that long term, that means working to develop the labor pool and participation in the trades, streamlining permitting and inspection (I just finished a gut reno and this was a fucking nightmare), and yes, changing zoning so the mass housing projects actually can get built.