Certified engineers


Our references

KÜHN Geoconsulting® GmbH is your experienced partner in all areas concerning subsoil analyses, contaminated site remediation, environmental informatics, hydrogeology and geothermal energy. Below is a selection of reference letters from our customers:



Basler Securitas – Restoration of an administrative building and construction site clearing, 2009

Broad geotechnical and expert assessment services, including:

  • Creation of a demolition land registry
  • Expert restoration and remediation management
  • Transfer of undeveloped area for subsequent construction activities

pdfReference letter from Basler Versicherungen


Motel One Cologne construction project, Cäcilienstrasse

Expertise, planning activities and construction supervision:

  • Construction soil analysis as per DIN 4020
  • Contaminated site analysis, soil protection
  • Restoration planning, demolition using large-scale equipment
  • Structural planning for construction trench protection, Section 49 -52 HOAI
  • FEM – Technical deformation considerations for creating construction trenches
  • Supervision of pollutant remediation, restoration and mineral restoration
  • Specialist geotechnical support of earthworks and special civil engineering works
  • Measurement monitoring in the construction environment, with regard to vibrations and deformation

pdfReference letter from Hochtief




Cologne Nippes WestSite project, 2011

Broad geotechnical and expert assessment services, including:

  • Building material evaluation
  • Detection of contaminated building areas of listed or preserved building materials
  • Supervision of building restoration
  • Creation of a construction trench
  • Disposal management

pdfReference letter from Ewald Hohr Wohnungsbau


Contaminated site remediation for the parking garage at the Vodafone Campus in Dusseldorf, 2011
Broad geotechnical and expert assessment services, including:

  • Creation of a GIS, volume calculations, geostatic assessment and visualisation
  • Creation of alternative foundation concepts for the parking garage
  • Client consultation
  • Creation of cost-benefit analyses

pdfReference letter from Vodafone

Strassen.NRW. [North-Rhine Westphalia Roads]
A4/A44/A544, Modification of the Aachen AK, 2015
Broad geotechnical, analytical and planning services, including:

  • BAB 44, construction soil analysis for the creation of a supporting wall
  • BAB 44, construction soil analysis for the renovation of Construction Work 5103727 “L223 Underpass (formerly B264)”
  • BAB 44, construction soil analysis for the creation of a “Quinx” noise barrier wall
  • BAB 44, construction soil analysis for DN 900 pipeline through the motorway embankment
  • BAB 4/BAB 44/A544 construction soil analysis for the restoration of Junction Construction Work 5103722 “Central Construction Works”
  • Construction soil analysis for partial restoration of Construction Work 5102 524, “L 232 Underpass” to the BAB 4

pdfReference letter from Straßen.NRW.


Möbel Höffner Rösrath

  • Soil inspections
  • Creation of a hydrogeological analysis of the infiltration of rainwater in the context of creating a development plan
  • Drainage planning
  • Water-licensing approval procedures for water conservation during construction and the permanent reduction of groundwater and introduction into the Muehlenbach river

pdfReference letter from KGG


Read more about our reference projects.

KÜHN Geoconsulting® GmbH is an independent consulting firm that has been active in the fields of subsoil consulting and remediation of contaminated sites for more than 50 years.

With an engineering quota of 74 percent and a workforce of over 50 long-standing employees, we are in a position to serve even major projects reliably, on time and to the highest quality standards.

With the experience from more than 22,500 orders, from single-family homes to high-rise office buildings, our employees develop professional, customer- and practice-oriented solutions.

Certifications and further training are an integral part of our corporate culture, so that you always receive the best state-of-the-art solutions from us.

Companies for which we have already completed projects and orders and who place their trust in us are HochTief, Deutsche Leasing, Vodafon or the city of Cologne. This is only a small selection. Feel free to ask us for further references.