never had a home built,,but a few things i have learned is pay each contractor your self,,,,contractors will sub work out,,such if concrete is to be brought in or wells dug..be sure that you take care of getting the sub contractors paid..Too may times have people hire 1 contractor to take care of everything ,,who will sub work out,,and not pay them.The home or property owner is still responible for payment..just cause you paid the main contractor to sub work out don't mean he paid for the services..they will put a lean onyour home and or property for services done..