Erwin Walter Graebner, born in 1939, is one of the most distinctive entrepreneurial figures in Germany’s real estate industry. During his career he brought up important innovations both in the field of tax-privileged investments and private property ownership. One of them is the development of the so-called "Bauherrenmodell”.
Being responsible as a developer and financial adviser for approximately 25,000 housing units, 20 hotels and being a long term part owner of LTU Group, the third largest conglomerate in the German tourism industry, his experience and advice is requested by banks, co-developers and private universities.
Since 1990 Erwin Walter Graebner addressed himself to the restoration of listed buildings – a subject for which he received an appointment as a lecturer at the European Business School (EBS) International University Schloß Reichartshausen.
Jan Hendrik Froesch, born in 1971, is a lawyer and corporate counsel since 1999 and has gained experiences in the field of real estate law, construction and engineering law.
After several years of working as a counsel for a middle-sized engineering and real estate development company in Cologne and for Bilfinger Berger AG, an internationally active construction and services group, he joined Convalor Beteiligungs- und Verwaltungsgesellschaft mbH in 2007 as a counsel with statutory authority and became member of the management in 2008.
Jan Hendrik Froesch is also member of the board of Amplio Hotel Investments A.S. and is working as a lawyer.
Ulrik Karsten, born in 1965, graduated from Cologne university in business administration after completing an education as a banker.
During the past years he gained experience as a director and supervisor in middle-sized companies in the field of real estate, construction and asset management.
After one year as authorized representative, Ulrik Karsten has been part of the management since January 1st, 2017.
Ute Nickel, born in 1958, completed her business management apprenticeship at the Municipality of Cologne. After years of experience as assistant in construction companies she joined Convalor Group in 1994.
After years of experience as assistant in construction companies she joined Convalor Group in 1994 and assisted the former management as personal secretary. She is responsible for accounting and payment transactions.
After a business management training Katharina Mazat joined Convalor in 1980 taking care of accounting and the handling of financings of tax-privileged investments.
Over the following years she gained wide experience in all fields of the sales order process and construction management and finally assumed the coordination of all internal affairs. Since 2005 she is Mr. Graebner’s personal assistant.
Mi-Ri Bak, born in 1987 in Cologne, graduated from university early 2014 as a commercial lawyer. She gained her first professional experience in the legal department of a temporary-employment agency and as a clerk at Bundesanzeiger Verlag.
Since January 2015 she works as an assistant to the directors of Convalor Beteiligungs- und Verwaltungs-GmbH and gives supports in the fields of project development and contract management.