Price: $345,000 in 2001
Square Footage: 964
The Skinny House in Boston’s North End was built as a “spite house” during a family feud and is the narrowest house in Boston. At its most slender, the exterior is 9.25 feet, and the narrowest part of the interior is 6.2 feet, making it one of those properties where an adult can touch both walls from the center of the room. The four-level Skinny House has no front door (it’s entered from a side alley) and the guest room is a closet, but it still has more square footage than many apartments, plus a yard, so there’s that.