Projects Lansdowne House, Berkeley Sq, W1

Located in the heart of Mayfair, Lansdowne House will occupy the entire southern end of London’s historic Berkeley Square. The development will deliver 225,000 sq ft of premium office space alongside 18,000 sq ft of retail and restaurant accommodation, creating a significant new destination in one of London’s most prestigious locations.

CO—RE acts as Development and Project Manager on behalf of Audley Property.

Designed by Stirling Prize-winning architects Allford Hall Monaghan Morris (AHMM), planning consent was secured in November 2020 following a successful collaboration with Westminster City Council. Works commenced on site in July 2023, and completion of the base build is scheduled for Q4 2027. The building will become the new London headquarters for Blackstone, the world’s largest alternative asset manager, following a long-term pre-let agreement secured for 100% of the office space.

The new building is being constructed by Mace, who were appointed following demolition and enabling works.

The design incorporates accessible balconies on every floor and rooftop terraces featuring greening and biodiversity measures to enhance well-being. A recent design enhancement introduces a striking double-height auditorium fronting Berkeley Square, providing a 250-person event and networking space. This update includes a forward extension of two storeys, a lengthened top canopy, and increased transparency to the central bays, offering unrivalled views across the square.

Once complete, Lansdowne House will target the highest sustainability standards, including BREEAM Outstanding and WELL Platinum certifications. The project won the World Architecture Festival 2022 Best Future Office award and will deliver significant improvements to the surrounding public realm, reinstating the site’s historic connection to Berkeley Square.