10 Gresham Street

Sustainable delivery in London’s Square Mile

A sleek city office building and expansive rooftop revitalised to provide sustainable Grade A workspaces

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10 Gresham Street Project summary

Client

CBRE Investment Management

Key partners

Thamesis, Gensler, Knight Frank, AECOM

Project timeline

Start date: September 2023
End date: Q4 2025

Project story

10 Gresham Street is set to become one of London’s most sustainable office buildings in the heart of the city’s historic Square Mile. With Mace Fit Out and Retrofit team appointed as Principal Contractor, the development is undergoing Grade A refurbishment on behalf of CBRE Investment Management.

Designed to go above and beyond to meet the demands and expectations of modern-day occupiers, the new workspace will unlock creativity, productivity, and high performance. Mixtures of natural materials, shapes and colours preserve the original structure including its iconic façade, whilst floods of light will pour across each level through a centralised atrium. The development also boasts a multi-purpose indoor rooftop pavilion with panoramic views of St Paul’s Cathedral, seamlessly blurring the lines between indoor and outdoor spaces.

The rooftop terrace is like no other; populated with meticulously chosen plants, outdoor meeting spaces, flexible event space, sensorial gardens, and relaxation corners. Heights above the hustle of London’s busy streets below, the rooftop ensures space to breathe, inspire one another, and collaborate.

The team has taken a circular materials approach, minimising embodied carbon through the recycling and repurposing of materials, and the removal of fossil fuels. The development hosts a commitment to the sustainable sourcing of timber materials and accountability for other construction materials, such as concrete, glazing, and Terrazzo flooring. Alongside the reduction of construction waste, the completed development will use passive and low energy design measures, including low energy LED lighting and high-performance glazing.

Project stats

145,000 sq. ft. of office and rooftop space

250kgCO₂/m² upfront embodied carbon target

£7m of social benefits

Points of note

Promoting an active lifestyle

Fit for purpose, 10 Gresham Street will encourage occupiers to re-think their commute, through its incorporation of 480 cycle parking bays and club-like facilities, with 480 lockers, contemporary showers and changing facilities.

Community at our heart

Mace is supporting the delivery of an estimated £7m worth of social benefits, providing vocational qualifications, education and outreach, wellbeing programmes for local residents, and volunteering projects for a local charity or community group.

Sustainably Accredited

The re-development aims to achieve BREEAM Outstanding, WELL Platinum, and Energy Performance Rating (EPC) B, whilst also hitting carbon levels 67% below RIBA 2030 Carbon Target.