Clean Garant Gebaeudereinigung Dr. Winkler GmbH, based in Berlin, provides nationwide building cleaning services and in particular offers maintenance, basic, facade and window cleaning as well as office and industrial cleaning as infrastructural facility services. The company was founded in 1967, has been managed as a GmbH since 1994 and is largely family-owned. Customers mentioned for the reporting year include public clients such as the Marlene-Dietrich-Haus and the Paul-Loe-be-Haus in the government district as well as retail branches (including Penny) and private-sector chains. The company is certified to DIN EN ISO 9001:2008 and DIN EN ISO 14001:2015 and employed an average of 647 employees in 2019.
Büro- und Industriereinigung, Fassaden- und Glasreinigung, Unterhaltsreinigung sowie sämtliche Reinigungen im und am Gebäude, die Vornahme von Schulungen und Coachings, alle damit zusammenhängenden Arbeiten sowie die Beteiligung an gleichartigen Unternehmen und deren Ankauf.
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Source: German Commercial Register (Handelsregister) Berlin (Charlottenburg) Local Court, HRB 55541 (as of 5 October 2026)
Source: German Commercial Register (Handelsregister) Berlin (Charlottenburg) Local Court, HRB 55541 (as of 5 October 2026)
Source: German Commercial Register (Handelsregister) Berlin (Charlottenburg) Local Court, HRB 55541 (as of 5 October 2026)
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Source: German Commercial Register (Handelsregister) Berlin (Charlottenburg) Local Court, HRB 55541 (as of 5 October 2026)
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