Contact Us

The Harbor Bay Business Park Association and its services and programs are managed by GS Management Company. We welcome your feedback, comments and questions. You may contact us at the following addresses, phone numbers and e-mail. You may also submit the Contact Form below.

GS Management Company
5674 Sonoma Drive
Pleasanton, CA 94566

Property Manager: Marcy Marks
Phone: (925) 468-1611
Fax: (925) 734-8125