Meet the Duncan and Sons Team

Gary Duncan


I founded Duncan & Sons’ in March of 1989, with the intent of providing honest, high quality service to office building, educational & medical facilities, etc. Since then, God has blessed the business tremendously and we are thankful for where we are today. I enjoy spending time with my family and grandkids. I also enjoy working outdoors in the garden, mowing, and anything else that keeps me moving.



Luke Duncan


Luke joined Duncan & Sons’ team in 2006, cleaning then working on the floor care crew.  Besides leading the Company,  cultivating new clients he still works in the field when necessary. Outside of work, he enjoys spending time with his family and riding bicycles.


Reuben Duncan

Director of Special Projects

Reuben grew up in the family business, and has been an integral part of Duncan & Sons’ for 14 years. Cleaning then on the floor crew, he now heads up the special projects services. He enjoys spending time with family, fishing, working, and in the outdoors.


Sheri Henegar

Sr Vice President

Sheri joined the company over 6 years ago.  As General Manager she is involved in all aspects of the company from bidding the contracts to resource allocation and more.  She enjoys spending time with her family and traveling.

Mark Woods

Operations Manager

Mark came on board five years ago.  Having risen through the ranks to his current position,  Mark is one of the problem solvers in the company.  When not at work he likes to build or fix things and can usually be found in his shop at home.

Jesse Carpenter

Customer Care Manager

Jesse started with the company over 6 years ago.  He is the proud father of 13 children.  When not at one of his kids events he loves to motor boat in the waters of East TN, but gets to the ocean as much as possible.

Sherri Maynard

Recruiting & Hiring Manager

Sherri is very passionate about helping people. She enjoys social activities, most of all with her granddaughter! Her hobbies include interior decorating and creative design.

Anne Freeman

HR Generalist

Anne finds her job to be extraordinarily fulfilling and has enjoyed her relationship with Duncan & Sons’ since 2005.  In her spare time she loves traveling, trying local eateries, watching sports & living her best empty nest life with her husband Steven.

Vicky Davis


Vicky is celebrating over eight years with the company as the Accountant.  When not at work, Vicky likes to spend time with her family, hiking and camping in the smoky mountains.

Rebekah Rankin


Having grown up a sale shopper, Beka very much enjoys the challenge of procurement. She spends her free time cooking, organizing, and exploring Knoxville with her outdoor-loving toddler.

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