Meet the Staff

Glennwood Custom Builders’ commitment to customer satisfaction is second to none. Our educated and professional staff excels in design innovation, construction quality, on-time delivery, maintaining budget, and delivering an enjoyable building process to our clients.

The staff of Glennwood Custom Builders offers only the highest quality and workmanship level expected of any world-class builder, delivering a building process that is both gratifying and enjoyable for the home owner. At Glennwood Custom Builders, we are proud to maintain lasting relationships with our clients, during and after the construction process.

Dan Collins - Glennwood Custom Builders

Dan Collins

President, Glennwood Custom Builders

Dan brings a fresh insight and unique perspective to the building industry that has proven to be very valuable. He has a background in the automotive engineering industry and, through a series of promotions, has held such positions as Product and Applications Engineer, Purchasing Manager, Six Sigma Black Belt and Divisional Manufacturing Engineering Manager. Dan graduated with honors in Mechanical Engineering from Michigan State University.

"I grew up swinging a hammer in our family construction business. Though I chose to pursue an engineering career, I always had the notion that I’d eventually get back to my roots. Designing and building a manufacturing assembly line requires extreme planning, scheduling, and quality control to achieve a sound and robust product. Building a custom home should be no different. Our emphasis on the building process leads to the utmost quality, on-time and on-budget projects, and, most importantly, a stress-free and gratifying experience for our clients."

Outside of work, Dan maintains a passion for the outdoors. He takes full advantage of the recreational activities the Appalachian Mountains and surrounding National Forests offer. Hiking, back country camping, mountain biking, boating, and kayaking are among his favorites.


Bret Hartzog - Glennwood Custom Builders

Bret Hartzog

Project Manager, Glennwood Custom Builders

Bret was born & raised in the mountains of Western North Carolina. After high school, Bret’s creativity and passion for building led him to graduate from North Carolina State University with a Bachelors of Science in Construction Engineering and Management. After coming back home to the mountains to work for his family business building custom homes, he has built his knowledge & skills of custom home construction ever since. His roles in his family’s company, over the years, included home design & engineering, drafting home plans, project management, estimator, quality control supervisor, customer relations, and customer selection coordinator.

"Soon after I joined the Glennwood team, I quickly learned that Glennwood’s & my passion for creating a quality home, superior customer relations, and strong ethics were one in the same. For some, building their dream home is one of the largest investments, financially and emotionally, they will ever make. I feel extremely proud to be a part of that with them from the beginning to the end."

Bret and his wonderful wife, Jamie, as of 2013 are the proud parents of their first son, Vance. Bret has always been close with his parents, Robert & Lizabeth, and was accompanied throughout his childhood by his two brothers, Will and Cannon. All the young Hartzog boys attended West Henderson High School before going off to college. When not on the jobsite, Bret enjoys camping, snowboarding, biking, wakeboarding, scuba diving, golfing, and riding motorcycles.