I.e the kind of stuff everyone wants to do but can't justify flying so close to the sun on because they don't have a legal army say "we are in compliance and here's why" on their behalf when the municipal government comes looking for fine money or the slip and fall lawyer tries to make something their fault.
In "reasonable" (note for the bottom feeders, I did not say "free", I said "reasonable") markets the big guy has to do things to higher standards because his big pot of money will attract vultures looking for a quick buck if he does even slightly wrong.
Starting from this:
> The United States is short 4 million housing units
It's a lie. The US has more than one housing unit (1.1) per family.
We don't have a housing problem. We really really don't.
We have an urbanism problem, that made the dense hellscapes the only viable housing location.