Developments GmbH
Developments GmbH
Developments GmbH
Developments GmbH
We are an internationally operating real estate and investment company headquartered in Hamburg, Germany. The oneVest team has been successfully involved in the development and realization of real estate and businesses for more than 35 years, focusing on Germany, Israel and the USA.  Our business ethos is built on family values, creativity and innovative thought.

real estate

We are an internationally operating real estate company headquartered in Hamburg, Germany.

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In partnership with private and institutional Investors we execute the purchase and sale as well as the development of commercial, office and residential properties.

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We have positioned ourselves as a link between Israel and Germany. Focused on connecting the  Israeli and German ecosystem. To find out more, visit our news section.

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PROJECTS Most notable developments/investments being

  • Nobistor, Hamburg

    Nobistor, Hamburg

    Completion of a prestigious property in the heart of St. Pauli. One of the biggest developments in this area.
  • Binnenfeldredder, Hamburg

    Binnenfeldredder, Hamburg

    Developments of 86 apartments – with 6,200sqm living space and 58 underground parking spaces.
  • Bremer Straße, Hamburg

    Bremer Straße, Hamburg

    Development and construction of 3 apartment buildings with 58 apartments and 46 underground parking spaces.
  • Ahrensburger Straße, Hamburg

    Ahrensburger Straße, Hamburg

    Development of a residential and business building on 11,200 m² total floor space, 8,400 m² residential space.
  • Sülldorfer Landstraße, Hamburg

    Sülldorfer Landstraße, Hamburg

    Purchase of the Hamburger Konservatorium office building with ca. 2,140 m² rentable space.
  • Luna Equity

    oneVest accompanies Luna Equity, a UK based Blockchain Cosultant Company, successfully during the foundation.
  • Haspa Project

    Acquisition of a real estate portfolio, consisting of 18 Haspa branches (Germany’s largest savings and loans bank).

Real Estate We identify investment opportunities in real estate

Real Estate


We are know-how-source, project partner and service providers for our partners. We identify investment opportunities in real estate, get the financing and subsequently execute the development of the Property in cooperation with RED Baufeld GmbH. With the intention to hold the property long term or sell.

When holding long term, we are in charge of the asset management, in order to make sure that the value of the investment will stay stable and increase. Our family office is cooperating with international family offices. We are looking for long term partnerships based on mutual trust.

Partnership We build bridges between cultures and behaviors, helping to bring ideas into reality.



OneVest advises private and institutional investors in the purchase and sale as well as in the development of commercial, office and residential properties or is their partner.

The services offered range from the idea to the completion of a real estate investment. It includes advice on planning and realization as well as the mediation of co-investors, buyers or, for example, reinvestment possibilities.

We advise our clients on entering our markets of expertise Germany and Israel. In the past we have been very active in the US. Centers of activities have been Atlanta, New York and Florida.

Investments We allocate investment opportunities and find appropriate use for equity.



oneVest connects Startups & Entrepreneurs with Family Offices & Investors (both Private |  Institutional) and vise versa. Focus among other things are Blockchain, Financial Technology, Payment Solutions and innovative Hi-Tech.

We have positioned ourselves as a link between Israel and Germany, connecting the Israeli and German ecosystem both online and offline. In it´s short History of existence Israel has become a Start-Up power hub. The „Startup Nation“ is at the forefront of innovation.



Andreas C. Wankum

Andreas serves as the managing director of oneVest Developments. He is an active real estate Investor in Europe and the US since the 1970’s. In addition to his professional activities in the real estate sector, Andreas has been involved in numerous financing projects for companies and startups since the “Dot Com” Era in the mid 1990’s.

Following the Anglo-Saxon tradition, Andreas is, beside his business activities, also active for political and for charitable purposes.  He is a former member of the State and City Parliament of Hamburg and previously served as  Head of the Jewish Community of Hamburg and President of Keren Hayesod (United Israel Appeal) Germany.

Leon A. Wankum

Leon holds a BA in Philosophy with Ethics and Business Management. He graduated MSc Financial Economics at the University of Glasgow, writing his thesis on Crypto Currencies, focusing on Bitcoin, in 2015. After graduating, Leon spent a year in Israel, where he got certified as a Krav Maga Instructor under KMI (Krav Maga International).  Leon speaks German, English and Hebrew.

Leon is entrusted with the strategic planning and coordination of our international activities and investments. In this role, Leon helps building connections between Israel the US and Germany; focused on introducing the Israeli digital ecosystem to the world. His interests include Cryptocurrencies, Blockchain Technology and innovative Hi-Tech.

Marcos O. Websie Foto

Marcos Oliveira Bandeira

Born in Porto Alegre, Brasil, Marcos was drafted in the US to play College Football at the age of 19, where he received a full scholarship and played semi-professional until completing his Bachelor’s degree in Sports Management & Health and Physical Education. Thereafter Marcos was trained in club management skills, including trading player and marketing strategies. Adjacent he successfully worked and studied in Gold Coast, Australia and in Tel-Aviv, Israel.

In 2018 Marcos completed the Master of Business Administration of the Grenoble Graduate School of Business, where he was Triple credited: AMBA, AACSB and EQUIS.

Marcos is entrusted with the Investor Relations, – and in this role especially accompanies our Israeli Investors throughout the development of Real Estate projects, where he is in charge of the financial controlling and subsequently fund allocation.

Jutta Stephan

Jutta is in charge of our daily office activities, acting as a link between the company management and our partners. In this function, Jutta accompanies all projects between Germany and the USA as well as Israel.


get in touch with us

our office


Große Bleichen 35
          20354 Hamburg

+49 40 288 09 -0
 +49 40 288 09 -100