Plans Submitted for 46 Storey Office at 63 St Mary Axe 

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27 February 2025

AXA IM Alts has submitted a planning application for a 635,000 sq ft office in the Square Mile.

The plans for 63 St Mary Axe feature 46 storeys of office space, a new park, a multi-function ground-level auditorium and other public amenities. The building will be fossil fuel free, all-electric building, targeting BREEAM Outstanding, NABERS 5 Star and net-zero carbon in operation.

Designs from Fletcher Priest Architects feature a currently buried section of London’s ancient Roman Wall, with gardens on every floor that trace the original trajectory of the wall. The churchyard of St. Augustine Papey will remain as part of the new Camomile Park, a publicly accessible garden wrapping around the lower levels with over 100 new trees.

The public realm part of the project includes a multi-function auditorium for local community groups and building occupiers to use, and food and drink outlets.

Rob Samuel, UK Head of Development at AXA IM Alts, said: “Our plans for 63 St. Mary Axe reflect AXA IM Alts’ close collaboration with local community stakeholders and our extensive track record of delivering forward-thinking, flagship office developments in London. Designed as a low-carbon building for future generations, 63 St Mary Axe will help to address the significant shortage of high-quality, modern, sustainable and amenity-rich workspaces, not just in the City but across central London as a whole.

“In formulating our plans for the site, it was important for us to work closely with local communities, business occupiers, start-ups and other public and private sector bodies, to ensure that 63 St. Mary Axe bridges the gap between local people, City workers and tourists. It is intended to be an inclusive building which delivers the type of innovative and forward thinking workspace that helps the City of London continue to attract global occupiers. We have combined this with significant new green public spaces that align with the City of London Corporation’s ambition to keep the Square Mile more open and alive in and outside of traditional working hours, while also celebrating the City’s important Roman and medieval heritage.”

Picture: a CGI of the front of the proposed building, showing balconies with substantial greenery. Fletcher Priest Architects

Article written by Ella Tansley | Published 27 February 2025

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