Be sure to read the warning about scams. The listing does say it's offered by Cornerstone and there is a phone number. Call the number and ask for their California BRE Number and then verify it at http://www.DRE.CA.GoV
I am trying to figure out what is your question. The property at 525 W. Santa Clara is the arena where the Sharks play.
Please give us some more information so that we can tell what your question is.
Charles Butterfield MBA
Real Estate Broker/REALTOR
Broker/Owner: The Butterfield Real Estate Firm
Cell Phone: (408)509-6218
Email Address: firstname.lastname@example.org
California Real Estate Broker License: BRE#00901872