It appears to be listed by a property management company.
You can find their contact below:
Dede's Rentals & Property Mgmt, Inc.
Gina Landers, Broker, CDPE
DRE # 178500375 License # 01388614
If you are wanting to contact just on a cold contact, you might try knocking on the door. It really depends on your purpose in order to have a face to face with an owner. Usually, they don't want to be contacted unless they are listed with an agency or they have advertised that they are selling by owner. Be careful.