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About International Development

A woman holds a seedling in her hand in India

We have more than 40 years of development experience and use an integrated approach focused on empowering local communities and leveraging private investment to create a safer, more equitable, and more prosperous world for all.

Tetra Tech’s international development service offerings have expanded over time in response to our clients’ needs. We offer a comprehensive suite of integrated services in 15 key practice areas.

Our people are passionate about improving lives by applying their technical expertise and experience to create practical, sustainable, and environmentally responsible development solutions. We serve various development clients, including government agencies in the United States, the United Kingdom, Europe, and Australia as well as multilateral development banks and the private sector. Learn more about the work of our teams based in the United Kingdom and Europe, and our teams in the Indo-Pacific region.

We are part of the larger Tetra Tech family—a leading provider of global consulting and engineering services. Tetra Tech supports government and commercial clients by providing innovative solutions focused on water, environment, infrastructure, resource management, energy, and international development. With 28,000 employees worldwide, Tetra Tech’s capabilities span the entire project life cycle.


years of experience


international development employees


active projects



Our Offices

Tetra Tech provides innovative development services on six continents. Tetra Tech’s International Development Services group operates out of eight key home offices around the world.

United States

159 Bank Street
Suite 300
Burlington, VT 05401
+1 (802) 495-0282

United States

1320 N. Courthouse Road
Suite 600
Arlington, VA 22201
+1 (703) 387-2100

United States

100 Nickerson Road
Suite 200
Marlborough, MA 01752
+1 (508) 786-2200

United Kingdom

107 Gray’s Inn Road,
London, UK WC1X 8TZ
+44 (0)20 7837 2881

United Kingdom

The Malthouse
1 Northfield Road
Reading, RG1 8AH
+44 118 956 6066


Worldpark Level 1
33 Richmond Road
Keswick, South Australia 5035
+61 8 8375 4400

The Netherlands

Jan Luijkenstraat 92-3
1071 CT Amsterdam, The Netherlands
+31 20 214 2127
+31 20 214 2128


Krucza 16/22,
00-526 Warszawa,
+48 22 578 2280

In addition to our home offices, we also have various regional hub offices around the world, located conveniently close to some of our clients’ main overseas offices.

Hanoi, Vietnam

27 Hang Bai Street
7th floor
Hanoi Vietnam

Jakarta, Indonesia

Office88@Kasablanka, Tower A, 27th Floor Unit C
Jl Casablanca Raya Kav.88, Jakarta 12870, Indonesia

Lusaka, Zambia

Plot 8H, Roan Road,
Kabulonga Zambia

Manila, Philippines

3rd Floor, JMT Building,
ADB Avenue, Ortigas Centre Pasig City,
Metro Manila Philippines

Minas Gerais, Brazil

Av. Afonso Pena, 1.500, 5º andar
Centro Minas Gerais
Brasil 30130-921

Nairobi, Kenya

Ground Floor, Prosperity House, Westlands Road, Westlands

New Delhi, India

The Pride Hotel,
First Floor Asset- 5A,
Hospitality District,
New Delhi – 110037

Phnom Penh, Cambodia

Level 3, Room 322, Phnom Penh Center, Corner Sihanouk (274) & Sothearos (3) Blvd, Sangkat Tonle Bassac, Khan Chamkar Mon Cambodia

Port Moresby, Papua New Guinea

Level 2, Comrade Haus, Comrade Place (off Frangipani Street), Hohola
Papua New Guinea

Suva, Fiji

Level 2 – Module 2, Provident Plaza One
33 Ellery Street
Suva, Fiji

Learn more about Tetra Tech’s 550+ office locations worldwide.

Connect with us. Reach out to our international development experts.

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