My son had a recommended builder build a really nice house in northern Wisconsin. He made a change with the GC. I wanted the 150' driveway widened from 14' to 18' or something like that and it was okayed. The driveway was put in and when he came home he noticed something odd. The concrete driveway stopped about 6 feet from the frontage road, with gravel finishing it off. He questioned the oddity and the GC said he only paid for so many square feet, but he would be glad to finish for an additional amount. I don't know the conversation between them but the contractor should have either told him it would cost extra, whch wouldn't have been a problem or the sub screwed up. Just though it strange that could happen.