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Büll Family Office
The Büll Family Office emerged from the B&L Group, a Hamburg-based real estate developer and investor founded by Albert Büll roughly five decades ago.
Büll Family Office
The Büll Family Office emerged from the B&L Group, a Hamburg-based real estate developer and investor founded by Albert Büll roughly five decades ago. The B&L Group remains the operational core, specializing in office, residential, and specialty properties such as hotels and boardinghouses across Germany. The family office manages the wealth generated by these activities, alongside direct investments in companies and public equities, with Dr. Cornelius Liedtke having served as a long-term co-founder and business partner alongside Büll. Through the B&L Group, the family controls a directly-owned real estate portfolio of substantial scale. Confirmed holdings include the mixed-use Holzhafen Quarter on Hamburg's Große Elbstraße, the Kö-Bogen II commercial complex in Düsseldorf, the Hafenpark Quartier development in Frankfurt's Ostend district, and the Clipper Boardinghouses portfolio with assets in Hamburg and Berlin. The office's investment activities extend beyond concrete — confirmed strategies include direct investments, fund-of-funds commitments, and venture capital across sectors such as Energy Transition & Renewables, Mobility & Transportation, Industrial Tech, and FinTech. A known co-investment is in Encavis AG, a Hamburg-based wind and solar park operator. Day-to-day leadership falls to Tobias Krauss, who serves as CEO of Abacon Capital and Head of the Büll Family Office. While total professionals remain undisclosed, the family's influence extends into Hamburg's civic and sporting life: Albert and Christa Büll are prominent 'Gold' donors to the Förderkreis Internationales Musikfest Hamburg and members of the Norddeutscher Regatta Verein. The Albert Büll Stiftung handles charitable activities. In March 2026, the group's property management unit won an external mandate from AUG. PRIEN Invest, signaling continued expansion of its fee-earning services. The office's structural distinction lies in its simultaneous operation as both an active developer — constructing and managing large-scale German real estate projects — and a diversified allocator writing checks into external venture capital and private equity funds. This builder-owner-allocator model means deal flow can originate from construction site, tenant relationship, or fund manager, not just a traditional LP gatekeeper.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
Europe
Country
Germany
City
Hamburg
Corporate office
Hamburg, Germany
Principals
Tobias Krauss
CEO of Abacon Capital and Head of Büll Family Office
Albert Büll
Founder
Dr. Cornelius Liedtke
Co-founder of B&L Group
Sector focus
Frequently asked questions
Who runs investment decisions at Büll Family Office?
Tobias Krauss holds the role of CEO of Abacon Capital and Head of the Büll Family Office. He manages the overall strategic direction of the family's diversified investments. Albert Büll, founder of the B&L Group, is the ultimate principal.
How does the Büll Family Office source its proprietary deal flow?
The office has an unusual advantage through the B&L Group's active property development arm. Proximity to construction projects, commercial tenants, and local German market dynamics generates organic, real-estate-heavy deal flow. For venture and growth equity, it likely relies on its fund-of-funds commitments and direct relationships, though the specifics of external manager sourcing are private.
Is the office structured as a pure family office or a hybrid operating business?
It is a hybrid. The B&L Group functions as an operating real estate developer and investment manager that generates fee income and develops its own projects. The family office overlays this, directing the family's capital into public equities, direct company stakes, and third-party funds, making the group both an active builder and an institutional allocator.
What is the Büll Family Office's known posture on co-investments alongside external GPs?
Confirmed positions suggest a clear appetite for direct co-investment. The firm holds a direct stake in Encavis AG, a Hamburg-based renewable energy operator. This alongside its fund-of-funds approach points to a strategy of backing managers while also placing selective, concentrated bets directly on German operating companies.
Which investment stages does the Büll Family Office target?
It pursues a wide mandate covering buyout, growth equity, and venture capital, mostly within Europe. Its venture-stage activity appears to focus on industrial technology, fintech, and climate tech, while its real estate operations constitute a direct, control-oriented investment in core German commercial property.
What philanthropic vehicles exist and how are they separated from the investment office?
Charitable giving is channeled through the Albert Büll Stiftung. Albert and Christa Büll are prominent patrons of the Internationales Musikfest Hamburg. Philanthropic assets and governance are kept distinct from the B&L Group's commercial operations and the single-family office's investment portfolio.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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