Celebrating over 75 years of continous operation in Houston, EHRA Engineering is one of the oldest engineering firms in Houston. Offering a broad range of services from engineering design, surveying, and land planning to landscape architecture and construction management, the firm was established in 1936 as Edminster Engineering Company by its founder Truman C. Edminster, Sr. in Houston, Texas.

Truman C. Edminster, III and Jim Russ, third and fourth generations respectively, have continued the legacy of R. Terry Russ, Conrad Hinshaw and Truman C. Edminster, Jr.

In an era of faceless corporate entities, we take pride in the fact that we are still family owned and operated. The depth of family stewardship and breadth of firm experience allows us insight into innovative, effective project planning and design while maintaining economic viability.

about history