11 Belgrave Road

11 Belgrave Road is designed to meet the highest sustainability and wellbeing credentials. On completion it will take its place as one of London's most sustainable office buildings.

Street view of 11 Belgrave Road.

Key information


Eric Parry Architects


Quadrum Global



Year of Completion




11 Belgrave Road will deliver 108,000ft2 of Grade A workspace, 14,000ft2 of communal spaces and best-in-class facilities, including a café and gym. In addition, 13,000ft2 of exceptional green space is seamlessly woven throughout.

We are leading the major redevelopment's aspiration to be net zero carbon in both construction and operation, and to surpass the RIBA 2030 Climate Challenge target by 38%. The retention of a significant portion of the existing concrete frame of the building, as well as efforts to reduce environmental impact throughout the project, have resulted in predicted embodied carbon emissions of 466kg CO2 per m2 for the project, with 324kg CO2 per m2 for the refurbished areas – beneath the LETI target of 350 kg CO2 per m2.

It is the first project in the UK to achieve a NABERS UK 5.5* design-reviewed target rating for in-use energy efficiency, which we are also leading. In addition, 11 Belgrave Road has been pre-certified WELL Platinum and achieved a design stage BREEAM 'Outstanding' rating.

Design strategy

Our MEP strategy is focused on minimising carbon in operation and arming the building users with information and flexibility to aid this. Passive ventilation and thermal mass are supported by smart mechanical ventilation with display screens to inform occupants of real-time energy use. Heating and cooling is provided by air source heat pumps located in the basement, which freed up an additional floor of useable space, and carbon filters improve air quality for the building users.

We are also supporting client, Quadrum, with targeting Wiredscore platinum and Smartscore platinum, which gives potential tenants assurance that the building will deliver an exceptional user experience, be adaptable to a particular tenant’s needs and be fully future-proofed so that the building can continue being used for many years to come.

38% targeted improvement on RIBA 2030 Climate Challenge target

13,000 square feet of green space

5.5* The first project in the UK to achieve a NABERS UK 5.5* design-reviewed target rating for in-use energy efficiency

"11 Belgrave Road is an exemplar for how to convert an existing building that is not currently fit for purpose into a high quality, low operational and low embodied carbon office space.

We're excited to be leading on NABERS - the only office-specific, in use, energy efficiency rating system - and 11 Belgrave Road's pre-certified rating of 5.5* is the highest of any building in the UK.""

BA MPhil MSc
Principal Sustainability Consultant

Aerial view of 11 Belgrave Road.

© Eric Parry Architects

2024 Constructing Excellence Awards Climate Action