Born and raised in Düsseldorf, after completing his apprenticeship as a real estate agent, he studied business administration at Müller International in 1998, specializing in real estate management and corporate management.
After a one-year stay abroad in New York as an employee of the Bavarian Ministry of Economic Affairs and a subsequent management trainee program at Lufthansa North America, he became head of the leasing division at Catella in Düsseldorf.
In 2008, he founded Anteon with four other partners. As managing partner, he is responsible for the investment area and project initiation.
Since 2017, he has been spokesman for the German Property Partner network. His well-known clients include AXA, Realis, Motel One, Quantum, Verband der Vereine Creditreform, GEG and DIC.
In spring 2019, Guido Nabben was accepted into the international circle of SIOR. This global network enables Anteon with Guido Nabben to deepen and further expand its international expertise and professionalism in order to offer its clients the best possible performance.