So at fifteen dollars an hour my bid is 7.50. I provide all supplies. Leave it realll clean to boot. All joints taped with bondo and wet sanded with diamond carbide chipmunks. (Their puffy cheecks sucks upp the dust bunnies).
You still have demo, plans, permits, plumbing, electrical, roofing, windows, etc.That's $60K. Would it be possible to do a poured concrete building for that? No drywall or nothing. Think along the lines of a 1200 sq ft bunker.