 He bought a small building yard in Freckenhorst and started with demolishing houses.In 2002, Hagedorn bought a 10.000 sqare-metre area at the Werner-von-Siemens-Strasse between Gütersloh and Bielefeld, that still holds the headquarter and some facilities of the company.In 2006, Hagedorn founded the "Gütersloher Wertstoffzentrum GmbH" that recycles building rubble, followed by the "Erdbau- und -erschließungs GmbH" for civil engineering in Oktober 2011.