This is a sad story.
This small house is falling to wrack and ruin on a Maine island. I was told it once housed a (year-round) with kids. The current owner uses it as a large storage shed.
The dimensions were taken on the outside walls. The roof actually is larger than the dimensions shown as it overhangs.
I also went inside to get a sense of the layout. The ceiling is 6′ 9″ high on the ground floor. I did not take inside dimensions as the rooms are full of stuff and it was impossible to go into the shed addition in the back.