Comment by em-bee

the problem here is building only public housing, and the way the US handles public housing. vienna doesn't build just public housing. seestadt in particular is not public housing. the city does the planning, and private developers compete for specific projects that they fund themselves. and they don't compete on cost but on design that makes for a livable city. so developers don't just get to build what they think makes them the most profit disregarding everything else. the city does contribute to the funding, but that happens with every development in the city anywhere because by city law 2/3rd of all new development must be subsidized with controlled rent. but that is still not public housing like in the US.

the failure of the US project is that it is segregating poor people. vienna doesn't do that. subsidized housing is mixed in. every building has some subsidized apartments among freely financed ones, and also, while you need to qualify by income to get a subsidized apartment, you are allowed to stay even if your income rises.