I'd completely forgotten, but this brought it back. In the 70's, the father of a friend in high school was building a plane in the basement. I remember there were pieces spread all over, and my friend was telling me how much easier it was, as his father was using all metric system measurements.
Pinball machines are great entertainment, but a plane? Wow. Someone next door to me, when I was growing up, built a boat in their driveway. It was amazing, and they took a long time to both get it right, and to make it seaworthy and comfy. After launch they sailed it around the world. Amazing.
Wow, that's fascinating! What else can you tell us about the boat? How big was it? What was the rigging? How long did they take on the circumnavigation?
Most of the parts should fit through a normal door. It is common to build an airplane in your house for years, and then for the last 2 years rent a hanger for final assembly. (Most people don't get to the point of final assembly, but those who do...)