We build people.

We believe in building people in order to build the best buildings.

CMSWillowbrook continually develops staff to provide the professional services needed to help owners meet their goals and get the best return on their investment. We create leaders who think creatively and add value to every project.

From our pioneering founder to our innovative managers and supervisors, we are dedicated to forging meaningful relationships while providing full-service project management services. After 40 years in the industry, we continue to be a fast-growing, family-owned company.


Cary Dehart

Cary is a pioneer of the construction management industry. In more than 40 years working in the public environment, he has completed over 1,300 projects. 

Cary provides expertise in all functions of construction management along with having an in-depth understanding of Oklahoma statutes and how to look after an owner’s interest. 

He is dedicated to the improvement of the construction industry and has served as an industry leader. Cary also is past president of Oklahoma’s chapter of the Associated General Contractors of America.

Weston dehart

Weston represents the fourth generation of construction professionals in his family. He has spent his entire life learning to lead his company and his industry. He is a hands-on principal who prides himself on being readily accessible to each member of every project team. His primary function is to assist with sustainable construction, value engineering, cost control, scheduling and project safety management. 

Weston is an experienced collaborator with a wealth of technical expertise. He sits on several construction industry boards and foundations, and stays abreast of current trends and innovations in all aspects of the way buildings are built. Weston is passionate about sustainable construction and has given several keynote speeches on LEED Certification.

Summer mcclure

Summer grew up watching her father Cary construct buildings and spent many days assisting in the office. After a successful career in education, she re-joined the family business in 2012. 

Summer wears several hats at CMSWillowbrook. From reviewing every contract for compliance to creating a supportive culture for employees, she keeps internal processes running smoothly. She manages the company’s association memberships and coordinates all of its charitable giving. Summer also goes the extra mile for her local community, helping lead two successful sales tax campaigns in Grady County which funded upgrades to the fairgrounds and hospital.  


Cristy Callins
Vice president Pre-construction services

Cristy uses her nearly two decades of experience in the industry to ensure the preconstruction process is simple and organized. She is responsible for the executive management of all company preconstruction activities, from initial client consultation and cost estimations to business development. 

Cristy understands effective communication is the key to project success and uses that knowledge to build lasting, healthy relationships with specialty contractors. By helping project owners achieve their goals through leadership, integrity, passion and a servant’s heart, she ensures CMSWillowbrook delivers the best value for all projects.

Angelo Bradford
Vice President operations

Angelo joined the company part-time in 2005 while a freshman at Oklahoma State University. Starting as a laborer, he worked his way up to project manager, project director and now oversees all construction operations. He manages all project teams from pre-construction to project closeout. Angelo is committed to elevating the construction management industry. He was selected to serve on the AGC of Oklahoma Board of Directors for 2018-19 and the U.S. Green Building Council Leadership Advisory Board for Oklahoma for 2018.

Dianne Jackson
Chief Financial Officer

Dianne is numbers guru who passed the CPA test on her first try. She has more than 20 years of experience as an accountant in the construction industry. Dianne oversees a team of six staff accountants and has direct responsibility for accounting, finance, forecasting, strategic planning, and risk management. She loves the variety of her position and looks forward to something new every day. Dianne is a lifelong resident of Grady County where she received her degree from University of Science and Arts of Oklahoma.


Jeff McClure
vice president Self-Performance division

Jeff is an experienced project manager and planner with 14 years of experience in construction. He spent the majority of his career in rural communities, where he helped create a five-year master plan of improvement for the Grady County Fairgrounds, a domed gymnasium, storm shelter and new schools for two districts. 

Bryan Miles
Director of Operations, Tulsa

Bryan is a proven leader in the construction management industry with more than a decade’s worth of experience.  Bryan started in the industry as an intern in 2005 and worked his way up to project engineer, senior project manager and vice president of operations.

Bryan serves on the Oklahoma State University construction management advisory board and is a member of Leadership Tulsa. He is a Design-Build Institute of America (DBIA) professional and a Leadership in Energy and Environmental Design (LEED) accredited professional.