 I go through all the common home repairs based on home age. And you can use this to get a sense as to what age your house is. So for example, if you have steel plumbing pipes and you can still see them, if they're not active anymore, that means the house was built probably between 1900 and 1940 or so. If you have an undersized electrical system, that was probably pretty common around 1940 to 1960.