From a One-man Office to an Engineering Services Provider
1200+ employees
65+ years’ experience
22 locations
We have a plan - the same one for over 65 years. Over the past 65 years, social issues have changed but our driving forces have remained the same – entrepreneurial courage, our eagerness to make decisions and our fascination for progress and technology.
In 1958, civil engineer Willi Schüßler laid the foundation for the present Schüßler-Plan group of companies in Dusseldorf. He started his own company at the age of 30 on 23 August, giving himself what in effect was the birthday present of his life. In the meantime, the family-owned company of Schüßler-Plan is in its third generation. The new partners, Christina Zimmermann, Paula Wagenbach and Nina Baden-Wassmann, will ensure that the company remains in family hands in future. The three partners took over the shares of their fathers Norbert Schüßler, Bernd Wagenbach and Wolfgang Wassmann in 2018.
On September 4, 2025, the Rheinhessen planning group (PG), which had been a subsidiary of the Frankfurt-based Schüßler-Plan Group since 2022, merged to form another location of the engineering company.
2025
Dirk Seidl joins the management of Reducta GmbH
Dirk Seidl has joined our subsidiary Reducta GmbH as an additional managing director.
2025
Farewell of Rafael Casser from the Management
After 30 years of work at Schüßler-Plan, Rafael Casser is leaving the management of the corporate.
At the turn of the year, Rafael Casser largely went into well-deserved retirement.
2024
Appointment of Paula Wagenbach as Managing Partner
Paula Wagenbach is appointed Managing Partner of Schüßler-Plan GmbH and Managing Director of Schüßler-Plan Ingenieurgesellschaft mbH Frankfurt.
2023
Mannheim and Mainz
Office locations founded in Mannheim and Mainz.
2023
Expansion of the Berlin Management Board
Peter Meinke and André Hörmeyer are appointed managing directors of Schüßler-Plan Ingenieurgesellschaft mbH Berlin. Together with the managing partner Roy Manke, they form the new management of Schüßler-Plan Berlin.
2023
Farewell of Norbert Schüßler from the Management and Change to the Advisory Board
After 33 years of work at Schüßler-Plan, Norbert Schüßler is leaving the management of the corporate.
With the change from the operational business to the advisory board of Schüßler-Plan GmbH, Norbert Schüßler will continue to support Schüßler-Plan with his expertise in an advisory capacity for future strategic decisions.
2022
Foundation of the Schüßler-Plan infratec GmbH
Schüßler-Plan GmbH has founded Schüßler-Plan infratec GmbH together with RUBI Bahntechnik, thus strengthening its portfolio in the field of technical equipment for transport infrastructure, supply and communication networks.
2022
Planungsgruppe Rheinhessen becomes Part of the Schüßler-Plan Group
Acquisition of the majority shareholding of the Planungsgruppe Rheinhessen GmbH.
2022
Foundation of the Schüßler-Plan Digital GmbH
Schüßler-Plan GmbH founds the Schüßler-Plan Digital, which is particulary responsible for the strategic development of our digital range of service.
2022
Farewell of Wolfgang Wassmann from the Management and Change to the Advisory Board
After almost 36 years as an engineer, branch manager and managing partner at Schüßler-Plan, Wolfgang Wassmann is leaving the management of the corporate.
With the change from the operational business to the advisory board of Schüßler-Plan GmbH, Wolfgang Wassmann will continue to support Schüßler-Plan with his expertise in an advisory capacity for future strategic decisions.
2022
Foundation of the Schüßler-Plan Advisory Board
Foundation of an advisory board of Schüßler-Plan GmbH with consultative and strategic function.
2020
Appointment of Christina Zimmermann and Nina Baden-Wassmann as Managing Partners
Christina Zimmermann and Nina Baden-Wassmann are appointed Managing Partners of Schüßler-Plan GmbH and Managing Directors of Schüßler-Plan Ingenieurgesellschaft mbH Düsseldorf.
2018
60 years of Schüßler-Plan
Schüßler-Plan celebrates 60th anniversary.
Purchase of majority shareholding in Reducta GmbH Düsseldorf.
Norbert Schüssler, Bernd Wagenbach and Wolfgang Wassmann transfer their shares to their daughters Christina Zimmermann, Paula Wagenbach and Nina Baden-Wassmann.
2016
ICG
Purchase of majority shareholding in ICG Düsseldorf GmbH & Co. KG.
Company founder Willi Schüßler dies on 17 February 2016 at the age of 87.
Marcus Geipel becomes Managing Director of Schüßler-Plan Ingenieurgesellschaft mbH in Frankfurt am Main.
2015
Ludwigshafen
Office location founded in Ludwigshafen.
2014
Hanover
Office location founded in Hanover as part of the take-over of Eriksen Hanover.
2013
Schüßler-Plan GmbH
Transformation of Schüßler-Plan Consult GmbH into Schüßler-Plan GmbH with Norbert Schüssler, Bernd Wagenbach and Wolfgang Wassmann as Managing Partners.
Office opened in Dortmund.
2012
Hamburg
Office opened in Hamburg.
2011
ZIV
ZIV - Zentrum für integrierte Verkehrssysteme GmbH in Darmstadt becomes a fully owned subsidiary of Schüssler-Plan.
2007
Warsaw
Founding of Schuessler-Plan Inżynierzy Sp. z o.o. in Warsaw.
2004
Halle and Erfurt
Offices opened in Halle (Saale) and Erfurt.
2002
Stuttgart
Office opened in Stuttgart.
2001
Karlsruhe
Office opened in Karlsruhe.
1999
Nuremberg
Office opened in Nuremberg.
1994
Cologne, Leipzig, Neustrelitz
Offices opened in Cologne, Leipzig and Neustrelitz.
1992
Dresden
Office opened in Dresden.
1991
Berlin und Potsdam
Engineering companies founded in Berlin and Potsdam and founding of Schüssler-Plan Consult GmbH with Norbert Schüssler and Bernd Wagenbach as Managing Partners.
Office opened in Munich.
1987
Frankfurt am Main
Engineering company founded in Frankfurt am Main.
1985
Schüßler-Plan Ingenieurberatung GmbH
The office is transformed into Schüssler-Plan Ingenieurberatung GmbH.
1958
One-man engineering office
Will Schüssler founds the Will Schüssler engineering office in Dusseldorf.
