Friday, 22 August 2025
Sonar Real Estate has signed the first lease at PRISMA, a major office redevelopment project in Frankfurt’s Lyoner Quartier. IT consulting firm adesso SE has committed to around 6,500 square metres of office space, marking the beginning of the active leasing phase for the building.
The office space is scheduled for occupation in spring 2026, once the fit-out is completed. According to adesso SE, the decision to remain in Lyoner Quartier was based on both the building’s flexible design and its sustainable refurbishment.
PRISMA comprises approximately 50,000 square metres of gross floor area, including 44,000 square metres of office space. The property, acquired in 2022 by Sonar Real Estate together with a fund advised by Patron Capital Advisers, was previously occupied by Deka Bank. The building has since undergone a comprehensive renovation designed by Holger Meyer Architekten, focusing on energy efficiency, flexibility, and ESG compliance.
Sonar reports that primary energy consumption has been reduced by 55%, allowing the building to meet the KfW 55 standard. Projected CO₂ emissions are under three kilograms per square metre per year, equivalent to 42% lower emissions compared with a conventional new build. The project is targeting DGNB Platinum and BREEAM Excellent sustainability certifications.
A reuse approach has also been integrated into the refurbishment. Fixtures, materials and furniture were evaluated for reusability, with many items reintegrated into the building or redirected into the material cycle.
Beyond office space, PRISMA will include a 3,000-square-metre atrium accessible to the public, with facilities for catering, co-working, conferences, and exhibitions. Additional amenities include a planned restaurant, fitness centre, and event space.
The renovation is due for completion by the end of 2025. Sonar says further leasing discussions with potential tenants are ongoing.
Savills advised the owner, JLL acted for the tenant, and Gowling WLG provided legal counsel.
