2011
- Further expansion abroad to Spain by the acquisition of 80% of the Grupo Gestión Global (GGG) with offices in Madrid and Sevilla (RGM SPAIN S.L.)
- Establishment of the parent company RGM Holding GmbH to manage the three strategic business units Facility Management, Property Management and Industrial Services
2010
- Founding of RGM TURKEY A.S. based in Ankara and Istanbul
- Acquisition of the majority of shares in the HRW Gebäudetechnik GmbH, Hamburg
- Acquisition of the industrial services provider ThyssenKrupp ExperSite GmbH, Kassel, and change of company name to RGM ExperSite GmbH
- Acquisition of the Property Management activities of the LEG NRW GmbH, Düsseldorf
2009
- Deconsolidation and reorganisation of all Property Management services into one separate business unit under the leadership of the newly established PropertyFirst GmbH, Bochum
- Reorganisation of all activities in the fields of sustainability, Green Building and ecological as well as economical Energy Management under the new flagship brand REAL GREEN
- Acquisition of RSE Service GmbH (now: RGM Retail GmbH), Berlin
2008
- Acquisition of the majority of shares in the industrial services provider KAMB Elektrotechnik GmbH, Ludwigshafen, retroactively to 01 January 2008
2007
- Change of the company's name to RGM Gebäudemanagement GmbH and redesign of external image as a consequence of the new shareholder structure
- Acquisition of RIAG Gebäudemanagement GmbH by STEGO Vermögensverwaltungs GmbH, Hamburg, as well as Fritz-Klaus Lange, Bochum
2005
- Purchase and integration of Holthoff Service GmbH with offices in Berlin and Frankfurt to strengthen the maintenance and industrial services business
2003
- Acquisition of all shares in the Nymphenburger Grund Verwaltung GmbH, Munich
1994
- Foundation of the two companies RIAG Gebäudemanagement GmbH (RGM) and STEAG Gebäudemanagement GmbH on 22 August 1994
