11 Belgrave Road

One of London's most sustainable buildings, 11 Belgrave Road has been designed to meet the highest sustainability and wellbeing credentials. 

Arial view of Belgrave Road with view of London in the background

Key information

Architect

Eric Parry Architects

Client

Quadrum Global

Value

Undisclosed

Year of Completion

2024

Sector

Challenge

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

The building during the construction phase multi storey building with blue sky background

Putting wellbeing first

The design life of the existing structure has been extended, reducing embodied and whole life carbon whilst creating a flexible workspace; 35% of the existing 1950s concrete structure and foundations were retained to reduce the embodied carbon of the project.

Accessible amenity spaces and good natural light with openable windows and smart environmental controls contribute to this healthy workspace. Wellbeing was a key priority for this project, with interior spaces designed with low-environmental impact, bio-based and recycled materials, for a domestic and welcoming feel. 

A new garden courtyard and green roofs on the first and eighth floors will provide a rainwater buffer, purify the air, and help regulate indoor and ambient temperatures. A species-rich planting plan offers a range of invertebrate habitats to support biodiversity. Sustainable Drainage Systems in the landscaping mimic natural hydrological processes, attenuating rainfall runoff. 

"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 were excited to lead 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."

portrait of Henry Pelly

BA MPhil MSc
Principal Sustainability Consultant
Partner

2024 Constructing Excellence Awards Climate Action