My mountain cabin started out at 24x36 (864 sq ft), then expanded to 26x36 (936). Then the placement demanded a walkout basement because of the slope (1872).
Of course I had an attached garage and it had to be slid forward about 12 feet to manage the slope. Well, that left just wide enough space at the lower level for an additional garage with a shop above.
Then the the architect thought it would be a good idea to have room for a kitchen table so there went 96 sq ft out of my wood shop and into the house (1968 sq ft)
I have no idea what I need that much room for, but I'm going to have an awesome home theater!