Diamond Properties’ Mark Blanford and Jeff Haack Receive CoStar’s Q2 2026 Power Broker Quarterly Deals Award

MOUNT KISCO, N.Y.--(BUSINESS WIRE)--Aug 25, 2026-- Diamond Properties announced that Mark Blanford, Executive Vice President, and Jeff Haack, Leasing Manager, have been named winners of CoStar’s Q2 2026 Power Broker Quarterly Deals Award for completing a leas…