re: How Much Cheaper Would A Home Be If The Owner Built It Themselves?

You can save a lot, but you have to have the equipment and know how, and some one who can pull permits(or live in area where they are lax in codes).

My uncle had a back hoe, and other heavy equipment, so he was able to do a shite load of expensive work. He let carpenters and drywall guys do their thing.

He did plumbing, electric, and hvac by himself and his worker(he had a business doing insurance work on homes).