I think the mistake here is looking only at the improvement and not the land (whole picture).
You might have a house that is a tear down but the land is incredibly valuable.
So look at the land.How big is it??What shape is the parcel??Any road frontage??Is it a corner parcel??Are utilities and sewer at the street??
Stop sign or traffic light installed??
I often find older houses with estate sales or foreclosures sitting on land.The house will either rent out while I wait for commercial development to get there or if the house is a tear down you can use the corner for a car lot or other things to generate revenue.
Land development is big money.Usually developers try to lock it up cheap and then make a mint selling to a corporation.
A CVS or Walgreens will sometimes pay 600,000 and up for an acre in the right location.Banks,restaurants,gas stations also like the corners or being close to one.
I am eyeing a property right now. 29,000 1 acre corner parcel with an old house on it.Easily will go commercial down the road in a few years.Buy for 20,000 sell for 250,000 to 300,000.
If you know what you are doing land is where it's at.