I am not sure of a specific site that would include all data, but an avenue you may explore is government open data or scraping tax records for each state. For example, in Maryland you can search the property records for every house. It will show you all sales, name&#x2F;purchase price, since the property was built. I am not sure if there is an API or what their terms are specifically. I do know other states offer similar services as well. Some offer it statewide, and others have county specific sites (i.e. in Delaware each county has their own website with the records).<p>The Maryland site is:
<a href="http:&#x2F;&#x2F;sdat.resiusa.org&#x2F;RealProperty&#x2F;Pages&#x2F;default.aspx" rel="nofollow">http:&#x2F;&#x2F;sdat.resiusa.org&#x2F;RealProperty&#x2F;Pages&#x2F;default.aspx</a><p>Not sure if that helps or not :)