This is not actually a House That Jack Built, it's from Olde World Dollhouses, but ...I put it here.  This is a really cool house - great for a cabin or summer cottage.  Really well built with 1/2 thick cabinet grade plywood and Houseworks components.  Comes assembled (not available as a kit)

Dimensions: 19 1/2 W x 15 1/2 D (includes porch) x 21 1/2" to very top.