Today I learned that if you live in Manhattan, and you own a townhouse, its probably going to be 18 feet wide (I was reading this article in the New York Times). That seemed really narrow to me, so I got out the tape measure and measured out 18'. It turns out I was right, it really is narrow. And some townhomes are only 9.5 feet wide. I measured that out as well, and that is really narrow. It was very interesting to me. This is something I never even considered, much less the cost of one of these places. It makes me glad I have a backyard!