Solving housing affordability drives down average per unit real estate prices, obviously, but its likely to increase both land prices and as-improved prices on existing detached single-family residential units.
No, no court is going to buy a federal anti-zoning law as within Congress’s Commerce Clause powers.
https://www.freddiemac.com/research/insight/20210507-housing...
> As of the fourth quarter of 2020, the U.S. had a housing supply deficit of 3.8 million units. These 3.8 million units are needed to not only meet the demand from the growing number of households but also to maintain a target vacancy rate of 13%. Between 2018 and 2020, the housing stock deficit increased by approximately 52% (See Appendix 1 for detailed calculations of the Housing Supply Deficit).
Almost all of the proposals to fix the hosuing affordability crisis would piss off NIMBY homeowners who vote so they're not talked about.