Information (and link) to the Propertyshark website.
This is a commercial website. On one internet discussion group, Bob Leibowitz indicated that it offers a limited number of free searches per day. You search by street address and get information on when the building was built, current use, tenants including their demography, neighboring buildings, tax assessment, and in some cases a current color photograph of the building. More information is available for subscribers.
Once at the website, choose the urban area you are interested in. Note that we have no connection to this website other than providing this link.