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Through innovation and leadership, Tetra Tech helps people across the world create the essential conditions for successful economic development. Since 1977, Tetra Tech has led more than 600 projects in Africa, Asia, Europe, Eurasia, and Latin America and the Caribbean. These projects have helped countries respond to a range of environmental, social, and institutional challenges. Tetra Tech has 43 field offices around the globe.

Tetra Tech's international development services embodies Vermont's ideals of leadership in environmental affairs and local participation in government. The company adheres to the highest professional standards to achieve results. Clients rely on Tetra Tech's worldwide experience and distinguished, multidisciplinary staff. 

Clients include the U.S. Agency for International Development (USAID), other U.S. governmental agencies, multilateral development banks, the United Nations, and governmental bodies around the globe. Clients benefit from our access to innovative technologies and the latest research. To complement our U.S.-based, full-time staff, we rely on consultants who provide specialized skills for short- and long-term assignments. We offer planning, design, implementation and applied research services in eight categories:

  • Architecture and Engineering
  • Agriculture & Economic Growth
  • Construction
  • Democracy & Governance
  • Energy
  • Environment & Natural Resources
  • Global Security
  • Land Tenure & Property Rights
  • Water Resources & Infrastructure


Our emphasis is on the integration of business, education, government, community groups, and individuals. Working with all the stakeholders, we can define problems and identify solutions. Tetra Tech strongly believes in finding local solutions. We view outside consultants, ideas, and resources as catalysts to improvement. By analyzing problems at the grassroots level—and getting the community involved—we get the desired result: realistic, sustainable solutions.



159 Bank Street
Suite 300
Burlington, VT 05401

Phone: (802) 495-0282
Fax: (802) 658-4247


1320 North Courthouse Road
Suite 600
Arlington, VA 22201

Phone: (703) 387-2100
Fax: (703) 243-1374



605 Market Street
Suite 800
San Francisco, CA 94105

Phone: (415) 495-7772
Fax: (415) 495-6017