When someone says that "my grandfather built this house", say now or even 20-30 years ago, do they mean their grandfather literally built that house from ground up?
Foundation, framing, wiring, plumbing, stucco, roofing — the works?! Or do they mean it to say "My family has lived in this house for 3 generations since my grandfather [paid someone to] build this house?" Potentially based on grandfather's design/vision. Sure maybe grandpa put in the floors or a custom bookshelf, but did grandpa literally build the house?