With well over a century of combined experience, the Sterling Custom Homes team provides clients
with a level of expertise that inspires confidence and trust.


Duke Mc Dowell,


Duke Mcdowell

A graduate of Texas Tech University with a degree in Engineering with a Construction Option, Duke McDowell has devoted his entire career to building homes. Duke is a past Chairman and a past member of the Industrial Engineering Advisory Board for Texas Tech and has been recognized for his contributions and service to the home construction industry as an inductee into the Engineering Technology Academy at Texas Tech University.


Prior to establishing Sterling Custom Homes, Inc., Duke worked for two large homebuilding companies in Texas, serving as the Vice President of Construction & Operations. He also served as a consultant for 14 of the top 200 builders in the nation. These experiences have provided Duke with valuable insight concerning the issues facing homebuilders today.


“At Sterling Custom Homes, we are committed to turning our customers’ dreams into realities. What this means to you is the highest quality home at the most competitive price. Through architectural efficiency, volume purchasing and long-term subcontractor relationships, we are striving to build the finest quality homes and service department that can be found anywhere in the industry.” — Duke McDowell


Gary Grambley,CGB, GMB

Vice President of Sales & Marketing

Gary Grambley

Gary works closely with clients and Realtors, helping them get acquainted with the unique processes and unparalleled finished product provided by Sterling Custom Homes.


Gary is a graduate of Sam Houston State University, where he earned a BBA in Accounting. His attention to detail and commitment to total customer satisfaction makes him feel right at home in the Sterling organization. Gary says, “The fact that I can encourage a prospective customer to call any of our past clients, more than 250 Sterling advocates over the past 25 years, and ask them about their level of satisfaction with our processes and the quality of the finished product, gives me a tool that no other custom home builder can provide. I think this speaks volumes about our commitment to quality and customer satisfaction.”


In his spare time Gary is an avid runner. He recently completed his 7th marathon. Gary supports the Make-A-Wish Foundation and, with Sterling’s help, he raised over $12,000 for the charity through his Run For Make-A-Wish program last year.


Les Russell

Purchaser / Estimator

Les Russell

Les works within the estimating and purchasing systems that have been implemented at Sterling Custom Homes, Inc. These systems integrate into the accounting and construction management at Sterling to help maintain the quality and timeliness of our construction through Trade Partner relationships.


His career started in Central Texas and he has worked in the residential construction industry for the past 25 years. His experience working for small and large homebuilders has covered a wide geographical area of the US – from Orlando, FL in the East, to Las Vegas, NV out West and Troy, MI up North. Les’ most recent experience was as General Manager for a small semi-custom builder in Boulder City, NV.


This is Les’ second time around with Sterling Custom Homes; it just happens to be 18 years since the first time! His knowledge of residential construction, his ethics and his drive to be successful have earned him a strong reputation within the industry. Les graduated from Southwestern University in Georgetown, Texas with a Bachelor of Science in Business with a Major in Accounting and a Minor in Economics.


Cody Wagner

Construction Manager

Cody Wagner

Cody has been a member of the Sterling team since 2010.  He spends most of his time on location at our job sites overseeing the construction process. From clearing of the lot through closing of the home, he supervises the subcontractors, manages the scheduling and logistical systems and ensures the smooth implementation of our quality control processes.  Cody meets with homeowners to answer their questions and to discuss any changes from their original plans and specifications. His ability to listen to the homebuyer, along with his capacity to ensure Sterling quality in each home, is an equation that equals satisfied customers.


Cody graduated with his Bachelors of Science Degree from Texas Tech University.  With a degree from Texas Tech, Cody was a great fit for Sterling, but added to that, Cody grew up in the building business.  His father is a custom builder and Cody worked for him beginning in 1998 prior to coming to Sterling.  So Cody continues that family tradition and builds with a commitment to excellence and passion for building, which make him a perfect fit within the Sterling team.


Christine Mann

Customer Selection Manager

Christine Mann

As Customer Selection Manager, Christine assists homeowners with their selections. She is a liaison between our customers and trade partners; she schedules appointments, reviews proposals and gets selections ordered. She prepares customers’ CookBooks and updates their online Homeowner private login section of their website. Christine attends the weekly construction meetings to stay abreast of the daily activities, and provides support to the Construction Estimator and Construction Managers on customer selections.


Christine is also Executive Assistant to Duke. She provides administrative support, which includes scheduling his appointments, preparing/processing reports and special projects. Being a team member is important to Christine and she is always ready to assist homeowners and team members with a friendly and positive attitude.


Christine has been with Sterling since May 2002. She graduated from Southwest Texas State University with a Bachelors of Business Administration. Before joining Sterling, Christine was an executive assistant for the president of a telecommunications company and an office manager for an environmental law firm in Austin.