This is the best reason google had as to why they dont depreciate
"A house is far more durable than a car and does not out of date every few years for 10% of its purchase price you can renovate a house and get 25–30 years value from those renovations."
If a bunch of homes were built in the 1980s and their original values were 80K. With depreciation, the value should be around 50K-60K now. The value of those homes shouldnt all be 120K
. If you rennovate it,at best it should come back to its original value,maybe slightly higher. But this is why economics is a scam