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Realyze Ventures is a venture capital firm based in Cologne, Germany, focused on the real estate and construction sectors. Founded to address sustainability and operational efficiency challenges, the firm aims to reduce carbon emissions and enhance processes within the built environment. Established as a successor to BitStone Capital and MOMENI Ventures, Realyze Ventures has quickly positioned itself as a key player in the European venture capital landscape.
The firm manages approximately €50 million in its first fund, which closed in June 2025, and has a total of over €120 million in assets under management across previous and current vehicles. Realyze Ventures is backed by a diverse group of limited partners, including Art-Invest Real Estate, Cordes & Graefe KG, Goldbeck, MOMENI, and ZECH, along with family offices and an institutional European banking investor.
Realyze Ventures operates with a team of experienced professionals, collectively having made over 40 investments across prior vehicles. The firm is dedicated to supporting European founders who are developing scalable solutions that contribute to a more sustainable future.
Realyze Ventures invests in startups that are pioneering solutions for the real estate and construction sectors, with a strong emphasis on sustainability and efficiency. The firm targets early to growth stage companies, specifically in the proptech and energy sectors, and focuses on scalable technologies that comply with evolving legal requirements and meet the changing needs of customers.
The investment strategy is built around three key pillars: sustainability and resource efficiency, recalibrating owner and tenant needs, and enhancing productivity in skilled trades. Realyze Ventures seeks to address the skilled labor shortage in the industry by investing in technologies that streamline processes and improve operational efficiency. The firm is particularly interested in startups that can demonstrate a clear path to decarbonization and legal compliance in their business models.
Realyze Ventures has built a diverse portfolio of six companies, each addressing critical challenges in the real estate and construction sectors:
This portfolio reflects Realyze Ventures' commitment to investing in technologies that enhance sustainability and operational efficiency in the built environment.
Tim Fischer: General Partner with extensive experience in venture capital and a focus on sustainability in real estate.
Manfred Heid: General Partner, co-founder of BitStone Capital, with a strong background in investment management.
Stefan Läufer: General Partner, specializing in technology investments within the construction sector.
David Nadge: General Partner, experienced in scaling startups and operational efficiency.
Kai Panitzki: General Partner, with a focus on strategic partnerships and market development.
Akin Özdemir: Director of Finance and Prokurist, overseeing financial operations and compliance.
Daniel Pölt: Investment Manager, responsible for sourcing and evaluating new investment opportunities.
Marnix Roes: Investment Manager, focusing on portfolio management and growth strategies.
Matthias Lederbogen: Investment Associate, supporting due diligence and market analysis.
Johanna Schulz: Communications specialist, managing public relations and outreach.
Thomas Knaack: Venture Partner, providing strategic insights and industry connections.
Michael Stephan: Venture Partner, with expertise in operational support and scaling businesses.
To pitch Realyze Ventures, founders should visit their website at Realyze Ventures. The firm prefers detailed pitch decks that clearly outline the business model, market opportunity, and sustainability aspects of the startup.
While there is no formal application portal, a warm introduction is encouraged. Founders can expect a response within a few weeks after submission, depending on the volume of inquiries.
In December 2025, Realyze Ventures announced a collaboration with ATechX to promote sustainable transformation in the real estate industry. This partnership aims to strengthen their innovation network and enhance access to sustainable technologies.
In September 2025, Realyze Ventures led a €3.3 million funding round for viboo, an AI-based heating optimization system for commercial buildings. This investment highlights the firm's commitment to supporting innovative solutions in the energy sector.
Realyze Ventures has been actively deploying capital since the first close of its fund in June 2025, focusing on early-stage investments in European proptech and energy transition companies.
What are Realyze Ventures' investment criteria?
Realyze Ventures focuses on startups in the real estate and construction sectors that emphasize sustainability and efficiency. They look for scalable technologies that address legal requirements and evolving customer needs.
How can I apply or pitch to Realyze Ventures?
Founders can submit their pitches through the official website at Realyze Ventures. The firm encourages detailed presentations that highlight the sustainability aspects of the business model.
What makes Realyze Ventures different from other VCs?
The firm specializes in the intersection of real estate, construction, and energy, focusing on sustainability and operational efficiency. Their deep industry expertise allows them to provide valuable insights and connections to portfolio companies.
What is the geographic scope of Realyze Ventures?
Realyze Ventures primarily invests in European startups, with a strong focus on Germany. They are particularly interested in companies that can scale across the European market.
What is the typical fund size and check size for investments?
Realyze Ventures' first fund has a size of approximately €50 million, with check sizes typically in the low seven figures EUR for early to growth stage investments.
What kind of post-investment involvement can founders expect?
Realyze Ventures provides strategic guidance, industry expertise, and access to a network of partners and resources to help portfolio companies navigate the complexities of the real estate and construction sectors.
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