5401 Old Redwood Hwy, Suite 110
Petaluma, CA 94954
Founded in 1985, Cornerstone Properties is a leading Bay Area commercial real estate development and management ﬁrm. Locally owned and managed, Cornerstone prides itself on caring for its tenant-clients by providing unmatched administrative and facilities-based service. Cornerstone’s in-house dedicated building technicians ensure that all tenants can focus on what’s most important to them – their business. Customizing terms and space to each tenant’s needs provides the flexibility needed by all growing businesses. Cornerstone’s industry leading tenant retention rates shows its true focus on tenant service.
Cornerstone specializes in the rehabilitation and repositioning of under-utilized buildings. With over 2 million square feet of successfully redeveloped projects, Cornerstone has the in-house building management expertise to efﬁciently execute both large and small projects.