Our projects and research have taken us to each of the 50 states, with much of our work being concentrated in the southern United States. HHM’s clients include major federal and state agencies, and over 50 local governments, as well as numerous private and non-profit organizations, neighborhood groups, and individual property owners. Below is a sampling of the public-sector clients we’ve completed projects for since 1983.

Federal Agencies

  • U.S. Air Force
  • U.S. Army
  • U.S. Army Corps of Engineers
  • U.S. Department of Defense
  • U.S. Department of Energy
  • U.S. Department of the Interior
  • U.S. Department of Veterans Affairs
  • U.S. Forest Service
  • U.S. Marine Corps
  • U.S. Navy

State Agencies

  • Louisiana Division of Historic Preservation
  • Texas Department of Transportation
  • Texas Historical Commission
  • Texas National Guard
  • Texas Parks and Wildlife
  • Texas Turnpike Authority

Local Governments (Selected)

  • Amarillo, Texas
  • Arlington, Texas
  • Austin, Texas
  • Bryan, Texas
  • Comal County, Texas
  • Dallas, Texas
  • Denton County, Texas
  • Ennis, Texas
  • Enid, Oklahoma
  • Galveston, Texas
  • Georgetown, Texas
  • Guthrie, Oklahoma
  • Honolulu Authority for Rapid Transportation, Hawaii
  • Las Vegas, Nevada
  • McAllen, Texas
  • McKinney, Texas
  • New Braunfels, Texas
  • San Antonio, Texas