Re: 4, it's funny because while Seattle is somewhat dense by American standards...it's still got tons and tons of areas that are restricted to only low-density detached single family homes. A major city like Seattle should have few if any areas like that.
(Not that SFHs should be illegal of course, but they shouldn't be mandated)
(Not that SFHs should be illegal of course, but they shouldn't be mandated)