also, i like how all almost all the neighbors had different

[awesomemixtape10]

houses(sets,facades)

they didnt repeat houses many times. i think the jewish family from season 1 had verdie's house by the pond b4 they showed verdiie's family living there

[Easton]

Since the houses were on back lots and, like the Walton house, were just façades, it would be a simple thing for the crew to swap out windows, doors, roofs, siding, etc. to make the houses look different. The interiors, of course, were done in sound stages and could be built in any manner necessary. For instance, John and Olivia's bedroom and the girls' bedroom is the same room, just set up differently and filmed at different angles. But I agree that they always seemed to manage to make the different homes new, fresh, and different.