Or maybe build a block of flats specifically built for disabled people maybe?
And what if the "disabled" people don't like the location of the block of flats?
Oddly enough a lot of disabled people might like to live near their friends, family, carers etc, the current system is flexible enough to generally allow for that, if you have a block of flats just for disabled people you lose that flexibility (not to mention you get the problem of having to build it in the first place).
What putting them all into a block of flats does, is create a ghetto effectively.