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Creating Places,
Connecting People

We are already pretty good at that.

For over 50 years, GSG Berlin has been one of the key players in the Berlin economy. Student protests and squatters, the fall of the Berlin Wall and government relocation, the New Economy and its crash, cluster strategy and startup boom – keywords like these represent the eventful history of Berlin as well as the GSG over the past five decades.

Find out more by scrolling to the end of the page!

1965

1965–2023

The continuous work of GSG is closely intertwined with the development of the city, particularly with that of Berlin’s business sector. It has always been an important part of Berlin’s urban development and economic promotion. With over 40 locations, GSG Berlin provides suitable space for small and medium-sized enterprises, which form the backbone of the Berlin economy, to realize their entrepreneurial ideas. In the process, products and services “made in Berlin” are often created, which often shine beyond the borders of the capital city.

2,000

or more rented offices in Berlin
Büros in Berlin
Large, small, narrow, wide, tall, deep. We offer the appropriate office or commercial space for almost every requirement.

35

commercial courtyards in Berlin
We foster the growth of communities and provide diverse people with the opportunity to come together.

The portfolio ranges from traditional commercial courtyards with brick facades to modern commercial parks. The spaces provided by GSG are versatile in their usage. Whether it’s office space, commercial/production facilities, or storage space, small and medium-sized enterprises can find the suitable rooms ranging from 20 to 20,000 square meters, with room for growth.

58

years of impressive history
Click on the image to learn more about our history!

1

a really great team.
We are the GSG Berlin.

Get to know the leadership team

Oliver Schlink

Oliver Schlink

Chief Financial Officer (CFO)

Oliver Schlink

Chief Financial Officer (CFO)

Oliver Schlink has been the commercial CEO of GSG Berlin since 2010 and in 2014 he also became a member of the Board of Directors of CPI Property Group, the parent company of GSG Berlin. Oliver began his professional career as a senior consultant at KPMG. In 2001, he joined the newly founded Deutsche Annington, where he worked for nine years – mostly as head of controlling and one year as managing director of business management for the Westphalia region.

Sebastian Blecke

Chief Operating Officer (COO)

Sebastian Blecke

Chief Operating Officer (COO)

Sebastian Blecke studied civil engineering and industrial engineering at the Beuth University of Applied Sciences in Berlin. After several years in the construction industry, he switched to the real estate sector in 2005, initially as an asset manager at Teesland iOG (now Cromwell Property Group). In 2006, he became branch manager of the Berlin office of GPT Halverton and later Managing Director / COO of their German portfolio. From 2008, he built up asset management at Sirius Facilities, a real estate provider operating throughout Germany, where he was responsible for a portfolio of approx. 1.1 million sqm of commercial space as Head of Asset Management and authorized signatory. In 2011, Blecke became Chief Operating Officer (COO) of GSG Berlin before moving to the nationwide real estate investor Sector Seven Investors GmbH as Managing Director in October 2022. Since February 2024, is Blecke back at GSG Berlin as COO.

Sven Falkenberg

Head of Technical Services

Sven Falkenberg

Head of Technical Services

Sven Falkenberg has been with GSG Berlin since 1 February 2021 and has many years of experience as a manager as well as extensive technical skills in the fields of electrical engineering and facility management. He worked as Team Leader Technical Services until 30 June 2024 before taking on the role of Head of Technical Services on 1 July 2024. Prior to this, he gained substantial expertise as a project manager in the housing industry at Alba Facility Solution GmbH and as Technical Manager at Hotel RIU Plaza Berlin and Stadtservice Oranienburg GmbH. In his current role at GSG Berlin, he plays a key role in ensuring the seamless operation and increasing the value of the property portfolio.

Gabriela Els

Gabriela Els

Head of Real Estate Management

Gabriela Els

Head of Real Estate Management

Gabriela Els joined GSG Berlin in 2007 and is the Head of Real Estate Management as well as a Managing Director of GSG and its affiliated companies. Gabriela has extensive business experience in leadership positions in German property management and administration companies (Catella Property Management GmbH, BB Hausverwaltung GmbH, Bavaria Stadt und Land and ARWOBAU Apartment and Wohnungsbaugesellschaft mbH). In addition, Gabriela is responsible for training for vocational training (specializing in real estate) within the company.

Can Erden

Can Erden

Head of Controlling

Can Erden

Head of Controlling

Can Erden started working for the group as a controller in 2007 and took over the management of controlling in 2008. In 2012, Can moved internally to GSG Berlin and has been working there as Head of Controlling and Insurance Officer ever since. Can has many years of professional experience and was previously employed as a controller at HOCHTIEF Group at Streif Baulogistik GmbH, Viterra Development (now Vonovia), and GAGFAH S.A. (now Vonovia).

Michael Mandla

Michael Mandla

Head of Marketing & Communications

Michael Mandla

Head of Marketing & Communications

Michael Mandla founded the agency berlinerfreunde GmbH & Co. KG in 2004 and has been the owner since then. In 2008, he started as a project manager for marketing & events at Hertha BSC, took over the management in 2013, and moved on to the Artprojekt Group in 2018, followed by positions as head of marketing at Wettstar GmbH and Orlen Deutschland GmbH. Since 2022, he has been employed as Head of Marketing & Communications at GSG Berlin.

Marko Stojkovic

Head of Project Development

Marko Stojkovic

Head of Project Development

Marko Stojkovic graduated in architecture from BHT Berlin and has been a member of the Berlin Chamber of Architects since 2019. After successfully completing his studies, he went through all HOAI service phases and gained extensive experience in the planning and realisation of challenging construction projects. Since 1 July 2024, he has been Head of Project Development at GSG, where he has been a member of the team since 2019. In his previous role as Project Manager Senior Developer, he successfully realised various new builds, conversions and modernisation projects. Marko Stojkovic is experienced in competition management for architectural competitions as well as art and study commissions. He is also responsible for the coordination and management of development plan procedures and makes a significant contribution to the successful further development of projects in terms of sustainable and future-orientated construction projects.

Katja Schroeder

Head of IT

Katja Schroeder

Head of IT

After graduating with a diploma in IT, Katja Schroeder first supported GSG as an external consultant in 2006. Between 2007 and 2012, she worked as an IT director for Gestrim Deutschland GmbH before becoming a consultant for GSG again, this time at Aareon Deutschland GmbH. In 2017, Katja then started as Team Leader IT Support and Application Support at GSG subsidiary Hofnetz und IT-Service GmbH. Since 2024, she has been Head of IT at GSG, where she is responsible for all issues relating to the provision and availability of the company’s IT systems, as well as the conceptualisation, planning and implementation of IT projects.

Katharina Reinhard

Head of Human Resources

Katharina Reinhard

Head of Human Resources

Katharina Reinhard has been Head of Human Resources at GSG Berlin since January 2024. Katharina has many years of experience in human resources: Starting with personnel administration, recruitment, personnel deployment and personnel development, through to employee management, strategy development and process optimization. Before joining GSG, she worked as a manager for personnel administration and as a manager for recruiting at Coca-Cola Europacific Partners Deutschland GmbH. Prior to that, Katharina worked for 10 years at IKEA Deutschland GmbH in various HR positions. Among other things, as a specialist in the area of leadership, as an HR business partner and as a manager for personnel administration.

Gökhan Olkun

Gökhan Olkun

Head of Energy and Sustainability Management

Gökhan Olkun

Head of Energy and Sustainability Management

Gökhan Olkun started working at GSG Berlin in 2020 and created the new department of Energy and Sustainability Management. Since 2022, Gökhan has been the Head of Energy and Sustainability Management. He began his career as a project engineer and LEED Green Associate at Intep Integrale Planung GmbH, and in 2017 he moved to B.E.M. Berliner Energiemanagement GmbH, where he worked as a Senior Energy Manager. Gökhan is also a certified energy auditor.

Heiko Jilge

Heiko Jilge

Head of Accounting

Heiko Jilge

Head of Accounting

Heiko Jilge works as Head of Accounting for GSG Berlin since 2023. Before joining GSG Berlin, Heiko was working a. o. as a Clerk at together group HR Services GmbH, tax accountant assistant at BDO AG Wirtschaftsprüfungsgesellschaft, at Marcol European Services S.à r.l. initially Senior Analyst Accountant and then Team Lead Tax & Accounting, also Head of Accounting Property Management at TLG IMMOBILIEN AG and most recently Director Finance at CELLS Property Investors GmbH.

Gisbert Schwarze

Gisbert Schwarze

Head of Legal Department

Gisbert Schwarze

Head of Legal Department

Since 2012, Gisbert Schwarze has been the Head of the Legal Department and a proxy holder at GSG and its affiliated companies. In addition, he works as a data protection officer in the company. Gisbert has many years of professional experience in the areas of real estate, tenancy, corporate, and contract law. Before joining GSG Berlin, he worked as a legal advisor at Tower Management GmbH, Restaura GmbH, and Ernst / Köhler & Klett Rechtsanwälte law firm, and in 2005 founded a law firm with a focus on civil law, especially tenancy law.

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