Certifications & Associations

Tierra is an 'S' Corporation, incorporated in the State of Arizona in 1989. Over our 28 years in operation, Tierra has grown from a two-person, local right of way firm into a multi-disciplined land services firm servicing the western U.S. 



  • Minority Women's Business Enterprise (MWBE), State of Washington
  • Woman and Minority Owned Business Enterprise (WMBE), California Public Utilities Commission
  • Minority Business Enterprise (MBE), Pacific Southwest Minority Supplier Development Council
  • Woman Owned Small Business (WOSB)
  • Resident Business, State of New Mexico


  • American Council of Engineering Companies (ACEC)
  • American Public Works Association (APWA)
  • American Road & Transportation Builders Association (ARTBA)
  • American Society of Highway Engineers (ASHE)
  • Arizona New Mexico Telecommunications Association (ANMTA)
  • Arizona Transportation Builders Association (ATB)
  • International Right of Way Association (IRWA)
  • Metropolitan Pima Alliance (MPA)
  • Montana Telecommunications Association (MTA)
  • National Association of Environmental Professionals (NAEP)
  • New Mexico Rural Electric Cooperative Association (NMRECA)
  • Real Estate Advising Council (REAC)
  • Society for Mining, Metallurgy & Exploration (SME)
  • Southern Arizona Architects, Engineers & Marketing Association (SAAEMA)
  • Southern Arizona Homebuilders Association (SAHBA)
  • Tucson Chamber of Commerce
  • Washington Independent Telecommunications Association (WITA)
  • Western Telecommunications Association (WTA)
  • Women's Transportation Seminar (WTS)