The rich want to maintain their low density single family neighbourhoods exactly as they were when they bought into them.
The poor simply want to keep their current home and have it not torn down, as every other apartment is almost certain to be dramatically more expensive to rent than their current one.
If the city suggested building mid rise buildings with a percentage of below market units in leafy rich neighbourhoods far from low income areas you'd see that low income persons would be quite happy about this development. The rich wouldn't be.
Of course this is almost never the case. Rich homeowners vote in greater numbers and have the time and capacity to fight back, and so what we see is that the areas first in line for redevelopment are almost always low income areas (ie. The Mission) while rich ultra low density areas are left untouched.
> If the city suggested building mid rise buildings with a percentage of below market units in leafy rich neighbourhoods far from low income areas you'd see that low income persons would be quite happy about this development. The rich wouldn't be.
I don't believe that. There are many in SF who oppose all new construction, and many others who want 100% of new construction to be subsidized housing.
People need to stop trying to make the housing issue a one dimensional fight of pro-housing vs anti-housing. It's dramatically more complex than that.
Effectively what's happened is that rent control has sheltered many residents from the market rate of housing to a point where they are effectively locked into staying in their current rental and will never be able to afford to move to a new rental or ever buy a house. Given that they have no hope of ever being able to afford market rate housing and the government of San Francisco is has the power obstruct planning process for a myriad of reasons [that are surreptitiously used to exercise backhanded influence rather than judicial assessment] they have every incentive to resist everything that's not subsidized. Comically to the point where obstructionists tried to literally block all housing, lest it be 100% subsidized.[2]
[1]http://missionlocal.org/2016/08/city-cites-its-own-land-for-... [2]https://ballotpedia.org/City_of_San_Francisco_Mission_Distri...