Mustang Special Utility District Office
Aubrey, Texas
Expertise
- Municipal
Services
- mechanical / plumbing engineering
- electrical engineering
Size
- 23,000 SF
BHB provided mechanical and electrical engineering services for the renovation of a two-story office building, incorporating several notable features to enhance its functionality and sustainability. The electrical team installed a large standby generator capable of running the entire building for a few days in case of a power outage. Also installed was architectural LED lighting in the common spaces, which served as a unique focal point, immediately catching the eye upon entering the lobby.
The mechanical systems for the building included high-efficiency package rooftop units and split systems with economizers, ensuring optimal performance and energy savings. A web-based building control system was specified, allowing the owner to view and manage the systems remotely, further enhancing operational efficiency.
The plumbing systems were designed to minimize water usage, utilizing high-efficiency fixtures throughout the building. A pipe support system was installed below the suspended slab to address pipe movement in expansive soil conditions. Additionally, provisions were made for a future rainwater harvesting storage tank, supporting the building’s green sustainability initiatives.
In terms of safety and convenience, the building was equipped with a fully automatic fire sprinkler system and fire alarm system. Electric vehicle (EV) charging stations were also provided, promoting environmentally friendly transportation options. The project successfully combined functionality, sustainability, and modern technology to create a state-of-the-art office environment.
Key People
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Ian Bost, PE, LEED AP

Ian Bost, PE, LEED AP
Principal | Senior Mechanical Engineer
Ian Bost began working at BHB in 2001. As one of the youngest and newest additions to the leadership team, Ian still considers himself a kid despite being over the age of 35. Ian’s success at BHB has fostered several new relationships with higher education institutions for which he has become the primary point of contact. His projects at UNT, TCU, and UTA are some of the most technologically advanced for colleges and universities. They have included systems such as single-zone VAV AHUs and chilled beam systems.
Ian’s passion for engineering efficient systems stems from his desire to be a good steward of the land. He is involved with the AIA 2030 Challenge and works closely with our clients to provide sustainable design. Over the years Ian has continuously been involved with professional societies including the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and the Texas Society of Professional Engineers. His role as a past president of the Fort Worth ASHRAE Chapter has grown into mentorships for new chapter presidents and members.
He tries to live a balanced life with his family: wife Carmen and their four kids. Ian is a Texas Tech Red Raider Alumni who enjoys supporting his college and its athletic programs. Ian enjoys living and promoting a healthy lifestyle.
Project Experience
Arborlawn United Methodist Church
Central Texas College Nursing Center
Keller ISD Timberview Middle School
Northpark YMCA
TCU Annie Richardson Bass Building
TCU Charlie and Marie Lupton Baseball Clubhouse
TCU Ed & Rae Schollmaier Arena
TCU Frog Alley Parking Garage
TCU Mary Couts Burnett Library
TCU Rees-Jones Hall
Education
Texas Tech University:
Bachelor’s Degree/2000/Mechanical Engineering -
Les Brown, PE, LEED AP

Les Brown, PE, LEED AP
Founder | Senior Mechanical Engineer
Growing up, Les Brown wanted to be an architect. He later “came to his senses” and went on to receive a mechanical engineering degree from Geneva College in 1979. Les has over 44 years of experience in mechanical systems design and project management. He actively provides design and management for a variety of commercial, institutional, and municipal facilities.
His design experience includes HVAC troubleshooting, equipment replacement, code compliance, energy conservation, thermodynamics, building automation control systems, plumbing systems design, heat transfer, and temperature controls. He is also highly qualified in mechanical systems design for specialized environmental controlled areas, including hospitals, labs, and computer/data processing facilities.
Les is an active member and former chapter president of the American Society of Heating, Refrigerating and Air-Conditioning Engineers. He is also a member of the American Society of Plumbing Engineers and the National Fire Protection Association. Outside of work, Les enjoys hunting, fishing, and anything that involves outdoor sports. When they’re not spending time with their kids, Les and his wife, Gina, like to travel. His favorite place to visit is Alaska or anywhere up north that has mountains, trees, wildlife and cooler weather.
Project Experience
Arlington Animal Services Center
Catholic Charities of Fort Worth
Weatherford College Professional Services
Education
Geneva College:
Bachelor’s Degree/1979/Mechanical Engineering -
Sean Rath, CGD, LEED AP

Sean Rath, CGD, LEED AP
Senior Associate | Senior Mechanical Designer
Sean moved from Nebraska to Texas in 1995 and immediately started working full-time at BHB that fall. In his 20 plus years at BHB, Sean has designed hundreds of projects and is now an Associate who is a Certified GeoExchange Designer and LEED Accredited Professional. He has been an active member of ASHRAE since 2003.
Sean is an 80s music junkie who enjoys playing golf and poker outside of work. Sean is married to his wife, Candi, who also works at BHB. They enjoy spending time with their daughter, Ashley, and their two dogs, Smokey and Bandit. Sean and his family enjoy traveling and taking short vacations, whenever possible.
Project Experience
Arborlawn United Methodist Church
Arlington Heights Animal Hospital
Fort Worth Country Day Lou and Nick Martin Campus Center
Fort Worth Country Day Sid W. Richardson Visual Arts Center
Keller ISD Timberview Middle School
Mounted Patrol Equestrian Facility
TCU Rees-Jones Hall
Education
Gateway Electronics Institute:
Associates/1995/CADD & Computer Programming