After trying out a variety of web services that provide commercial property information, it looks like the two choices are Reonomy (which is $400/month with a one year minimum) or Propstream.
You can get a 7 day trial of Propstream using our link at commercialdealfinder.com
Doesn't cost anymore to use our link and they send us an affiliate payment that we donate to Homes for our Troops which builds homes for severely injured veterans.
Other choices are to check out your local county data which really varies depending on where you are located, or ListSource.com