Oh, I’m pretty sure that the cost of regulation is well over 50%.[0] Maybe if you consider a development that actually succeeds (as opposed to bought and then not developed, so the cost of regulation is 100% and there is no additional housing), and maybe if you file all the pre-construction costs in another category (e.g., having to redesign your building for stupid reasons[1]), then you get 20%. But the biggest cost to society is all those units that nobody even imagines building.
I don’t know if you’ve been paying attention, but San Francisco is in California. Bad state laws are being abused in San Francisco,[2] and the entire state is in housing crisis.[3] Additionally, Atherton affects San Francisco because it is within commuting distance. If Atherton built 500,000 units of housing especially within a mile of their Caltrain station, that would dramatically affect housing prices in San Francisco.
You keep using words like “dense.” San Francisco is not dense.[4] Most of the recent development has been on 20% of the land.[5] Go west or south of the Mission District, and except for small “transit corridors” and a few pockets of housing, it’s like a time capsule from the 1950s. With a lot more cars.
The idea that an area once built is finished, is a disease that threatens the viability of this country.[6] Small-time landowners cannot fix the crisis because around a third of the privately owned land is zoned for single-family homes (even worse down the peninsula).[7] It is actually illegal for most landowners to increase density, so they don’t even try.[8]
We do not need mega-developers with mega-towers at this time. Those have very high building costs. We can satisfy current demand with a whole lot of medium-sized buildings with much lower building costs.[9]
I don’t know if you’ve been paying attention, but San Francisco is in California. Bad state laws are being abused in San Francisco,[2] and the entire state is in housing crisis.[3] Additionally, Atherton affects San Francisco because it is within commuting distance. If Atherton built 500,000 units of housing especially within a mile of their Caltrain station, that would dramatically affect housing prices in San Francisco.
You keep using words like “dense.” San Francisco is not dense.[4] Most of the recent development has been on 20% of the land.[5] Go west or south of the Mission District, and except for small “transit corridors” and a few pockets of housing, it’s like a time capsule from the 1950s. With a lot more cars.
The idea that an area once built is finished, is a disease that threatens the viability of this country.[6] Small-time landowners cannot fix the crisis because around a third of the privately owned land is zoned for single-family homes (even worse down the peninsula).[7] It is actually illegal for most landowners to increase density, so they don’t even try.[8]
We do not need mega-developers with mega-towers at this time. Those have very high building costs. We can satisfy current demand with a whole lot of medium-sized buildings with much lower building costs.[9]
[0] http://sfist.com/2017/02/15/another_study_contends_sf_housin...
[1] https://sf.curbed.com/2017/4/28/15476540/1924-mission-review
[2] https://www.thebaycitybeacon.com/politics/how-cities-bypass-...
[3] https://www.nytimes.com/2017/07/17/us/california-housing-cri...
[4] https://sf.curbed.com/2017/3/8/14856316/san-francisco-densit...
[5] https://archpaper.com/2017/05/san-francisco-housing/
[6] https://www.strongtowns.org/journal/2016/4/17/sprawl-is-not-...
[7] http://www.slate.com/blogs/moneybox/2013/11/25/bay_area_zoni...
[8] https://yimbyaction.org/upzoningletter/
[9] http://www.businessinsider.com/san-francisco-density-thought...