Part of the reason they tear down old houses is that termites infest the wood and foundations, making it cheaper to raze the home that try to fix it. Black mol

Part of the reason they tear down old houses is that termites infest the wood and foundations, making it cheaper to raze the home that try to fix it. Black mold is also a big problem in many of the older homes. Newer homes are built with better materials and circulate air better, which helps with the mold issue, so we may see more remodeling done in the future. Another issue is zoning. Some houses were built when zoning laws were more lax. It isn't uncommon to see a land-locked house that is only accessible by walking in between other houses. Newer zoning laws don't allow new construction under these circumstances, so land owners will typically raze the entire block and rebuild from scratch.