I'm talking about both, but separately. For example Marin County has a lot of natural areas where development is verboten but it's also a big part of the appeal

I'm talking about both, but separately. For example Marin County has a lot of natural areas where development is verboten but it's also a big part of the appeal of the area (well, the fact that it's a wealthy white suburban area is a lot of the appeal too, and NIMBY policies keep housing expensive so it stays that way). I just wanted to bring it up because I feel it's yet another piece of the puzzle behind housing costs in the area - but I'm aware it's even more a contentious subject than zoning so it's not a hill I would die on. The biggest problem, by far, is single family zoning though.