Who we are

The group

Created in 1982, Terrell has contributed extensively to the development of composite steel and concrete structures. Our references in terms of concrete, steel and timber structures are numerous and emblematic: high rise towers, large-scale public facilities (including schools, hospitals, and housing) and above all office buildings.
Terrell collaborates with leading Architects on the technical design of projects to achieve optimal results. Terrell engineers bring innovative solutions in all fields of engineering and Terrell’s multi-disciplinary expertise and experience is proof of our ability to carry out complex and varied projects.

Terrell also has a truly international culture. Our numerous projects abroad have put us in a leading position in terms of technological innovation, not only in the structural field but also in terms of MEP and facades. This progress is part of a global approach that takes into account sustainable development.

Terrell engineers are fully aware of energy consumption criteria. We are able to answer environmental questions in a pragmatic and technical manner. This approach is instigated very early in the pre-schematic phase of a project by taking into account the inertia of a building when designing the structure, optimizing the air and water tightness of its envelope by providing appropriate solutions for the facade and, above all, defining the best energy solutions for optimal operational and functional cost.

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2014

In 2014, Peter Terrell, founder of the group in 1982, transferred the Presidency to John Hanlon who, with five Director-Partners - Alain Caillot, Dan Conroy, Ziad Dargham, Thien Phan and Nicola Ventura took over the management in the group.

2014

In 2014, Peter Terrell, founder of the group in 1982, transferred the Presidency to John Hanlon who, with five Director-Partners - Alain Caillot, Dan Conroy, Ziad Dargham, Thien Phan and Nicola Ventura took over the management in the group.

Our emblematic projects

Grand Palais restoration

2023

Saint Gobain tower

2020

Parc des Ateliers

2019

Carpe Diem tower

2015

Emiri pavillion

2012

Horizon tower

2011

Copenhagen Concert Hall

2009

T1 tower

2007

Le Quai theatre

2006

Colline de la Défense

1991

4 implantations in the world

Sales revenue

12M€

People

100

4 implantations in the world

Our leaders

John Hanlon

President

Alain Caillot

Associate Director

Dan Conroy

Associate Director

Ziad Dargham

Associate Director

Christophe Mathery

Associate Director

Thiên Phan

Associate Director

Guillaume Niel

Toulouse Managing Director

Christophe Mathery

MEP Department Director

Annabelle Datry

Structural Department Director