About us

BT Geoconsult is an independent geotechnical engineering company with a wide range of expertise’s. As a company we consciously choose to offer the complete range of geotechnical expertise to our clients. This way we can offer our clients  more service then just geotechnical advice and desk studies. To provide this full service to our clients  we also employ specialists in adjacent fields for project management, supervision and permitting. This way we can assist our clients through every phase of their project.

We have been in business for the past 12 ½ years and our roots are with the consultancy company J. de Koster Sr., which had professional  connections with e.g. real estate and assurance agents, contractors, energy companies, project developers and government organizations. J. de Koster  Sr. has been involved with large scale projects in the Netherlands as an advisor for many years.

On January 1st 1998  J. de Koster Sr. transferred the company to his son, J. de Koster Jr., and Gerbrand van Brussel. From this moment the company continued under the name De Koster & Van Brussel. On January 1st 1999 H.E.M. Temmink joined the engineering company as a partner.

In 2000 J. de Koster Jr. decided to leave the engineering company and to continue working under his own name. For this reason the company name was changed to Engineering company BT Geoconsult B.V. H.E.M. Temmink resigned as director of  BT Geoconsult on April 15th 2007 to start a consultancy company  in adjacent fields.

On January 1st 2008 J.F. Joosse became a partner at BT Geoconsult with the responsibility for the technical and engineering affairs and whereas Gerbrand van Brussel remains the financial director of the company. Between 2008 and now BT Geoconsult grew from a small company with approximately five employees to a much broader operating engineering company with 20 full-time employees. Besides the full-time employees we employ several students and interns.