
Construction and consultancy company Mace has been selected for the City of London’s office redevelopment at 100 New Bridge Street in the UK. Â
Appointed by Helical, Mace will serve as the main contractor for the retrofit project.
The redevelopment is part of a collaborative effort with a joint venture led by Orion Capital Managers.
The 1990s office building is located near the City Thameslink station.Â
The renovation entails the creation of 194,000ft² of Grade A office space, 3,592ft² of retail areas, and a 4,000ft² terrace.Â
Prioritising circularity, the redevelopment is designed to retain the existing structure, targeting a 95% reuse, recovery, and recycling rate for construction waste.

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By GlobalDataThis approach is expected to preserve 91% of the reinforced concrete lift cores and 85% of the reinforced concrete walls.
Aiming to achieve net-zero carbon emissions in both construction and operation, the project is striving for Building Research Establishment Environmental Assessment Methodology Outstanding and Well Platinum certification. Â
Helical CEO Gerald Kaye said: “We are delighted to be working with Mace to redevelop 100 New Bridge Street to create a best-in-class, carbon-friendly office in a prime location in the City of London. This development will help meet the growing demand we are seeing for prime office spaces with the highest sustainability credentials.â€Â
The latest project represents one of seven ongoing construction projects within the Fleet Street Area.
Mace Private Sector managing director Ged Simmonds said: “We are pleased to be partnering with Helical once again on another highly sustainable best-in-class office space at the heart of the City of London.
“Not only will this development be net-zero carbon in construction and operation, but by retaining the existing structure and reusing existing materials, this scheme is leading the way in circularity.â€Â
Construction on the site has already started, with completion anticipated in the first quarter (Q1) of 2026. Â
In March this year, Mace was appointed as the primary contractor to upgrade more than 100 properties in the region as part of the Future Ready Property Enhancement Initiative.Â