
Team
Our founding partners are experts in both the German and US markets, having started investing in the US real estate market as early as the late 1970s. Today, our team combines tradition with a cutting-edge investment approach. We are an agile team that acts with integrity.

Dr. Patrick Adenauer
Founding Partner
Managing partner of the BAUWENS Group in Cologne since 1989.
He has in-depth experience in all areas of the real estate industry and has been active for many years with his own investments in the USA, including in the multifamily residential complex segment.

Dr. Gisbert Beckers
Founding Partner
Has been active in the real estate industry in Germany, Spain and the USA for 35 years and has managed or co-invested investments of around € 5.5 billion. As founder of GAR, he is responsible for acquisitions in the USA and business relations with US partners.

Burchard von Arnim
Founding Partner
Together with Dr. Gisbert Beckers active in the US real estate market for more than 35 years. Founder and CEO of von Arnim Private Consulting GmbH.

Fabian Bauwens-Adenauer
Managing Partner
Several years of real estate experience working for a large US-based investment manager. Has expertise in the acquisition and management of real estate for institutional investors.
Managing partner of BAUWENS in Cologne.

Dr. Christoph Pitschke
Managing Partner
Has many years of experience in real estate-related consulting for family offices and as a fund manager of special real estate funds for institutional investors. Graduate of Georgia State University in Atlanta and member of the Royal Institution of Chartered Surveyors.

Nikolaus Adenauer
Managing Partner
Before joining GAR, he spent three years with PIMCO’s transaction team in New York, most recently as Vice President in Portfolio Management. He has extensive experience in investments, particularly in equity, mezzanine/preferred equity, and debt financing. Prior to that, he held various positions in Germany and earned a bachelor’s degree in England as well as an MBA from Harvard Business School in the USA.

Claudia Krämer
Head of Investor Services & Marketing
Responsible for services for various US real estate investments for more than 20 years. Many years of expertise in supporting transactions. Previously worked in marketing in global companies in Germany and London. Degree in business administration from the University of Duisburg-Essen.

Raphael Vercio
Head of Investments
Investment management. International studies with a focus on finance. Master's degree from the European Business School (EBS University of Business and Law) in Oestrich-Winkel and the Antai College of Economics and Management at Shanghai Jiao Tong University in Shanghai.

Jens Thiemann
Head of Transactions / Managing Director GAR US Inc.
Responsible for transaction activities and managing director of the GAR US Inc. in New York. Specialist for US real estate investments for global investors. Worked in New York for seven years before GAR. Extensive experience in transaction processes and management of office, retail, logistics and residential real estate. Trained real estate agent and graduate of the London School of Economics and Political Sciences (LSE).

Jana Becker-Maier
Investment Manager
Investment and fund management. Several years of professional experience in both the German and US real estate markets, with a focus on managing institutional mandates. Master's graduate from the IREBS International Real Estate Business School in Regensburg.

Leo Rosarius
Investment Manager
Investment management, analysis, and support of private investment mandates. Several years of professional experience at management consultancies in the field of transactions and financial restructuring, most recently setting up and commercial management of a MedTech start-up. International studies with a focus on finance in the Netherlands and the USA. Real estate economist at the IREBS in Regensburg.

Viktoria Adenauer
Transaction Manager
Transaction management, deal sourcing and support of acquisition and sales processes. Several years of professional experience in strategy consulting with a focus on organizational strategy and private equity projects (due diligence, value creation, growth strategy). Graduate of WHU - Otto Beisheim School of Management and ESCP Business School.

Petra Kischitzki
Investor Services & Marketing Associate
With GAR for 8 years, in the investor services and marketing team. Over 20 years of experience in the areas of assistance, IT/marketing, sales and purchasing in international companies. Trained banker and project manager (IHK).

Moritz Borges
Investment associate
Investment and fund management. Previously studied at Queens College in New York on a tennis scholarship. Double Bachelor's degree in Economics and Corporate Finance, followed by a Master's degree in Risk Management Finance.

Rahel Oeser
Assistant to the management board
Assistant to the management board since 2025. Support to the management and interface for cross-team projects. Several years of experience in international companies in various industries. Bachelor of Arts in Business Management from the Open University Milton Keynes.

Marc Tetzner
GAR Manager / USA
Many years of experience in the US real estate market. Lives and works in Florida since 2001 and is an American citizen. He has been advising international investors on real estate transactions in the USA since 2004 and joined the GAR Group in 2017 as local manager of the US companies.
Dr. Christoph
Pitschke
“We are proud of our team. The enthusiasm and commitment with which our investments are managed, our US partners integrated and our investors supported is impressive. Our employees act as intrapreneurs.“

