Grosvenor’s first net zero office building, Holbein Gardens is a redevelopment of a 1980s office near Sloane Square. 

One of the country’s leading examples of how outdated office buildings can be transformed into Grade A net zero workspaces, the project adopted a pioneering approach to minimising embodied carbon through re-using materials, retaining the fabric, greening and minimising waste. 

Centring on the retention of the existing four-storey structure and a one story extension, the project was designed by Barr Gazetas, and was the first to apply Grosvenor’s Sustainable Development Brief, which is based on best practice from current certification schemes and Grosvenor’s sustainability targets.   

With all contractors and advisors on the project challenged to help deliver against our targets of net zero carbon, zero waste and a significant gain in biodiversity, the building has achieved BREEAM Outstanding, NABERS 4.5* certification and an EPC A rating.  

The development of Holbein Gardens saved 59 tonnes of carbon by retaining the façade, the equivalent of 557 return flights from London to Amsterdam, reused 24 tonnes of steel, trialled a range of other low embodied carbon products and diverted 99.5% of strip out waste from landfill.