It‘s not like the structure rots or crumbles every year. It can last 100 years or more so it doesn‘t really affect the price that much. In any case the same house in a great location is valued far, far higher than in the middle of nowhere which is a good indicator where the price comes from. Not from the structure primarily.
Have you priced housing in middle of nowhere lately? I would be more then happy to live an hour off the interstate and have a couple acres of trees for neighbors. No problems with maintaining a well, having a septic system, and a propane tank. Doesn’t bother me that DoorDash doesn’t come there, StarBucks is a trip, and Amazon doesn’t do next day delivery. Houses like that now start around $350k and go straight to the moon. Most of them were purchased in the last 2-3 years and the sellers are trying flip them at 2-6x the price having made no improvements at all. The purchase history is public record and very telling.
At some point the banks should step in and say hey, there is no way this property is worth $300k, $600k, $900k - it will never sell at that price again, none of the local industries pay well enough to have a $7k per month mortgage payment, if the loan defaults we are going to take a bath. However the banks don’t do that, they just say California idiot has money to blow, give him the loan.
And of course the California idiot is going to have problems also when he wants to move in 2-7 years and finds out nobody can afford his house.