About : Principals


During his 25 years of architectural design experience, David Hensley has had the opportunity to work on transit-oriented design, urban infill housing, mixed-use communities and university campuses across the country. As LEED AP, David is focused on integrating sustainable design and green building into all the firm's projects. David has been recognized with more than a dozen design awards from organizations including the National Association of Home Builders and the American Institute of Architects.

David received his undergraduate degree from Texas A&M University and a Master of Architecture degree from the University of Texas at Arlington. He currently serves on the Board of Directors for the North Texas Chapter of the U.S. Green Building Council.


Robert Lamkin (Bob) has more than 25 years of experience leading architecture and engineering project teams. His experience includes a wide range of residential and commercial project types. Bob leads the firm's practice in the areas of proposals, contracts, finance and administration. He assists in planning, design development, consultant coordination and quality control.

Bob received his undergraduate and Master of Architecture degrees from the University of Michigan.


Mr. Rachel is the Principal in Charge of Operations at HLR and is primarily responsible for overseeing the production and quality of the Construction Document Systems and Standards in the firm. Bruce Rachel's role also includes the direction and guidance of the Codes and Standards, Quality Control and Construction Administration teams, as well as the production of Specifications for projects in the firm. Bruce received his Bachelor of Architecture degree from Texas Tech University. He currently serves as the Vice Chairman of the Dallas AIA Codes & Standards Committee.

Mr. Rachel also participates on the following Boards and Committees:

AIA National | Codes and Standards Committee

AIA Dallas | Board of Directors Executive Committee | Treasurer

AIA Dallas | Codes and Standards Committee | Current Member | Past Chair

North Central Texas Council of Governments | Regional Codes Coordinating Committee

North Central Texas Council of Governments | Building and Residential Advisory Board

North Central Texas Council of Governments | Energy and Green Advisory Board

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