I imagine it would probably be difficult to sell the renovated houses also.
Some of the houses, unless they used the existing footprints, are going to be overimproved for the area.
I have mixed feelings. I know they are making TV and money off the show, but they are helping people too and print media will always show the worse case scenarios. I mean come on, did the family really need an indoor car wash? I didn't see them do build anything ridiculous this time, but 3500 sq. ft. was a bit much when the family was used to living in 600 sq. ft. One would hope that they get estimated tax real estate tax figures before and approval from the owner before starting the renovations.