Team Behind Your Success
Bringing decades of real estate, planning, and construction expertise to every project.
Seasoned Professionals Driving Development Excellence
Keystone Development Group brings together an experienced development bench with decades of leadership in real estate, construction, planning, and project execution.
Art May Founder & Principal
Art May brings more than 30 years of experience in real estate development and construction leadership. His expertise includes development management, financial modeling, transaction structuring, and public-private partnerships.
He has managed projects across multifamily housing, affordable housing, hospitality, office, and mixed-use developments. Before founding Keystone Development Group, Art held leadership roles with the Kimpton Hotel & Restaurant Group, Security Capital Group, and Western Development Group.
Education That Shapes Vision
Art earned an MBA from Stanford Graduate School of Business along with degrees in construction management and architecture from the University of Washington. He is also a member of the Urban Land Institute and a Certified Green Building Professional.
Meet Our Team
Grant Freeman
Grant Freeman brings over 30 years of commercial real estate experience specializing in acquisitions, dispositions, financial underwriting, and transaction support. His expertise spans office, residential, hospitality, retail, and land development projects.
Throughout his career, Grant has worked with leading firms, including Jones Lang LaSalle and The Staubach Company, and also served as CFO for Makrar Properties.
He earned a BS in accounting from Pepperdine University and is a California-licensed real estate broker and certified public accountant.
Sam Worden
Sam Worden is a land development professional with extensive experience in master-planned communities and infrastructure projects. His expertise includes land planning, regulatory coordination, infrastructure design, and construction management.
He has worked with organizations including Toll Brothers, Five Point, and the Oakland Athletics on major development initiatives across California.
Sam holds degrees from the University of California, Berkeley; UCLA Anderson School of Management; and Stanford University.
Don Trainor
Don Trainor is an experienced construction professional specializing in hospitality, residential, and tenant improvement projects. His expertise includes budgeting, feasibility studies, consultant coordination, and construction oversight.
He previously served in leadership roles with Howard S. Wright Constructors and Kimpton Group, overseeing hotel renovations and large-scale construction projects nationwide.
Don earned his BA from Washington State University.
Work With an Experienced Team
Let’s explore how Keystone Development Group can help reduce risk and maximize project success.