9 Cavendish Square
- Contacts: Jason Rudolph, Callum Graham
Positioned on the north side of Cavendish Square, this landmark West End building has been reimagined for the future as a best-in-class workplace, balancing heritage, sustainability, and wellbeing at the heart of the square.
Originally redeveloped 20 years ago by Rolfe Judd, the building has played a key role in shaping the architectural rhythm of the square’s north side. With the departure of the previous tenant, the project presented an exciting opportunity to deliver a best-in-class office environment that supports Westminster City Council’s ambitions for a revitalised Central Activity Zone.
Designed with sustainability and well-being at its core, the retrofit sets new benchmarks in environmental performance and workplace experience. Key interventions include the addition of new landscaped terraces, a green wall in the internal courtyard, and strategic enhancements to natural daylight all aimed at improving air quality, mental well-being, and the overall user experience.
A full upgrade of the building’s mechanical and electrical systems incorporates smart technologies, a high-efficiency heating and cooling system, and an all-electric strategy significantly reducing carbon emissions and eliminating fossil fuel usage on site. The project targets BREEAM Excellent, NABERS, and WELL accreditations, reflecting a deep commitment to long-term sustainability and occupant health.
Internally, the building has been enhanced to promote connectivity and collaboration, with improved communal spaces, enhanced end-of-trip facilities, and an expanded reception area. Carefully considered structural changes such as new terraces at the second and fourth floors offer panoramic views of Cavendish Square and improve indoor-outdoor connections, while maintaining architectural harmony with the surrounding conservation area. The project embraces a circular economy approach, prioritising the reuse of materials and low-carbon construction practices.
