10 Gresham Street is one of the City of London’s most ambitious office retrofit projects — transforming a landmark building into a highly sustainable workplace while retaining its original structure.
Originally completed in 2003, this Foster + Partners designed building was more recently reimagined by Gensler in partnership with CBREIM, with Mace as the main contractor. With 145,000 square feet of Grade A office and rooftop space, the comprehensive refurbishment project preserves the building’s original structure and iconic façade whilst creating a net-zero emission workplace. An expansive communal rooftop pavilion was added with biophilic gardens, offering stunning views across the city, including St Paul’s Cathedral.
10 Gresham Street’s key sustainability features and ratings include BREEAM Outstanding, WELL Platinum, WiredScore Platinum, EPC B and carbon levels 67% below RIBA 2030 Carbon Target.
Aquality were pleased to work alongside AECOM in developing and supplying a bespoke water reuse solution to help significantly reduce the building’s potable water demand.
Early engagement with the design and contract teams helped coordinate this bespoke system into constrained plant space and support integration with wider building services.
As a result, the building uses 55% less potable water than a typical building. For example, the reuse of shower water using our greywater recycling technology alleviates 20% of WC flushing demand. A further 5% is alleviated through our blue roof rainwater harvesting system.
Water reuse continues to play an increasingly important role in making retrofit projects like these sustainable and viable.
