These two guys are what, 26 & 27, and had really never lived apart from their parents. It is a bit more typical for males to stay home til they're married, here, but I do find it unusual for the parents to move with them, when they do marry and leave home.
For awhile, at least G3 and his wife, were living in a trailer on FW's place, and the parents were living in a home just up from them, that they'd lived in for years. The trailer is gone now and you can barely tell it was there.
Maybe everyone was trying to get away from everyone else! The boys from AW and GW3, with their fiance/spouse, moved to Peterson, and the parents from FW and GWsr. So, they all end up crammed in the home on Peterson, after the boys' relationships failed.