A 9.5 foot wide house sold in Greenwich Village for more than 2 million bucks recently. Edna St. Vincent Millay, the great poet, once lived there.
Chicago has a rather similar house in the heart of downtown. It apparently used to be a stable. It's set back in its own little alley, nestled among some good-sized buildings. You can see it here.
I'm not sure either place
has a lot of closet space