A good home inspector can spot home repairs and changes and often ask for others inspections based on what he sees, I incourage homeowners to keep notes and photo's of the work they do to any of the systems of the house. If that's availlable during the inspection, he is more likely to be satisfied with what he sees. Once a home owner starts keeping records like this, he is more likely to do it right the first time. This is good even if you use contractors. And if something has to be fixed for a sale, so be it, nobody wants to by a house that is dangerous.