If zoning was fixed as GP was saying, then more housing people want would get built rather than what pencils out best for developers.
Zoning issues like low height limits, and high parking requirements etc. contribute to the shortage by making it infeasible build a lot of 3BR/1500sqft units because returns are better by building 2 smaller units in the same footprint, and because there's a shortage of housing, they'll be able to sell less than optimal units to people that need them.
Zoning issues like low height limits, and high parking requirements etc. contribute to the shortage by making it infeasible build a lot of 3BR/1500sqft units because returns are better by building 2 smaller units in the same footprint, and because there's a shortage of housing, they'll be able to sell less than optimal units to people that need them.