This was the first episode I've watched where I thought, when is this show ending? It was not good.
I can believe that the main house is close to paid off. If Erika is over 21 and they've lived in their house the kids' whole lives, I can buy that the current house either paid off or very close to it and probably with a low mortgage. But why not take the money and just upgrade their existing house? It was so weird.
Yes, Glascott is renting the house next door.