I built my first house, with some help from my dad. It was only 880 sq ft total. 2 br, 1 bath. It was a pay-as-I-went dream, as I had no credit. Started digging a footer by hand at age 21 in 1983; finished the house, got married and moved in 2 years later. I did all the work myself, except for framing/rafters (my dad and my brother-in-law helped me do those). Rafter pitch and angle are a puzzle to me, but my brother-in-law can read a square. I dug the footer, poured the concrete, laid the blocks, did the wiring, plumbing, shingling, etc... I ended up with almost $19k in it. I bargain-shopped for sheetrock, lumber, paneling, etc...