I'm not the parent commenter, but I've heard this complaint before, and it usually boils down to zoning and some types of development limits drastically reducing the efficiency of the housing market (in terms of provision of housing to the most people). AFAICT, it's not really controversial that land use regulation is a big chunk of what's responsible for the craziest housing markets in the country[1].

An illustrative example is the shocking cost-effectiveness of trailer parks. The fact that the land beneath the trailer generally isn't owned means that they're technically free of a lot of the weird distortions of the regular property market, and thus people who would otherwise be homeless are able to avoid the impossible choice of a house they can't afford or living on the sidewalk.

[1] http://www.economist.com/news/leaders/21647614-poor-land-use...