Heiple Tenant Advisors was formed in 1991 by David Heiple. During the past 25 years, Mr. Heiple’s broad-based experience has made him one of the Valley’s leading tenant brokers. Mr. Heiple is an expert in renewals, expansions, relocations and lease negotiations. He has negotiated more than 1,200 office leases totaling in excess of 6.1 million square feet.