Cornerstone Properties is a Silicon Valley based company which owns and manages commercial office space throughout San Mateo and Santa Clara counties, with owners and managers on site in our San Mateo office. Cornerstone Properties was founded in 1985 by Steve Kaufman and John Jacques, and has primarily hi-tech tenants with many projects geared toward startups; offering flexible lease terms and expansion space.  Our properties are a source of pride; they are well-maintained, attractive, and provide a clean and pleasant atmosphere for our tenants; with an emphasis on providing extraordinary customer service.  The underlying premise for all of our dealings with our tenants is one of respect and care.  One essential principle exudes above all:

Our tenants are our greatest priority.