If I was a betting man, I'd pretty much bet anyone, anything that the Durham guy has no schoolbus parked by the home and won't ever have one.
That was more like, IMHO, he jokingly told a HH intern during the interview process that he'd thought about moving into a schoolbus during college to save $$$, or something along those lines. Drama masters that they are, tptb would have jumped on that one and run with it for the episode. IIRC, his wife was not going to let that happen.
WRT the Westerville couple, it was obvious that was their house from the beginning. They didn't need to search for an entire year, living at the parents', if true, in order to find a tract home in the suburbs (haha), 3 miles from the bustling nightlife, lol. (No offense to anyone from OH or the Midwest or any small town, anywhere, BTW.)