Deerns’ history in a nutshell


In 1928, Paul Wessel Deerns and Dirk Houtman junior founded a partnership by the name of Houtman & Deerns. An engineering consultancy was quite a novelty in those days. Paul Wessel Deerns was a visionary, and a highly innovative one at that. Following the death of his partner, in 1930, Paul Wessel Deerns continued the firm by himself.

After having been inoperative during WWII, the firm grew exponentially after the war. It became specialised in a number of specific market segments, including health care, energy supply, hotels, and the development of residential and office buildings. As aviation started booming, in the early nineteen sixties, Deerns also focussed on Schiphol Airport. Soon, airports around the world were included in the firm’s clientèle.

When Paul Wessel Deerns retired, in 1966, he left his firm in the care of 260 professionals. Subsidiaries were located in The Hague, Amsterdam, Rotterdam, and Hengelo, as well as abroad: one in Sao Paulo and one in Rio de Janeiro.

Today Deerns has grown into a substantial multinational, employing more than 600 staff members in 24 national offices around the world.

2014        

Deerns opens office in Turkey (Istanbul)

2014

Deerns designs the MEP system for the most sustainable office building in the world (The Edge)

2014

Deerns sets up a new office in Sao Paulo, together with three partners of the Brazilian firm Sistenge

2013

Deerns takes over the activities of Ibinser, Spain 

2013

The German business units of Schmidt Reuter, P2B and Scheer, are completely incorporated in the Deerns Group, continuing by the name Deerns Deutschland  

2013

Deerns opens the Belgian office

2013

Take-over of Scheer Beratende Ingenieure in Stuttgart

2012

Take-over of Hilson Moran Italia spa.

2011

Deerns opens a national office in london

2010

Deerns is one of the first engineering firms to use Building Information Modelling, BIM

2010

Deerns opens a office in Paris

2009

 Openening of the National Office in Denver

2006

Start activities for largest airport project: Abu Dhabi Airport

2004

Take-over of Schmidt Reuter, Cologne, Germany

2001

Planungsgruppe Berlin Brandenburg becomes a part of Deerns

2000

Deerns continues to grow on an international scale

1987

First climate façade

1985

Deerns develops Ides: integrated design system 

1984

The firm changes its name into Deerns raadgevende ingenieurs b.v.

1978

Deerns celebrates its 50th anniversary

1966

Paul Wessel Deerns retires 

1956

First projects abroad: Greece and Turkey

1952

The firm changes its name into Adviesbureau P.W. Deerns

1951

The consultancy changes its name into: Deerns Consulterende Ingenieurs N.V.

1928

Foundation of ‘bureau voor technisch advies’ Houtman & Deerns