Construction Enquirer News Mace advising on £160m project to expand and retrofit former BT HQ
Plans to expand and retrofit British Telecom’s former HQ building in the city of London have got the planning go-ahead.
Located close to St Paul’s Cathedral, the 81 Newgate Street office project is being hailed as the first of a new generation of net-zero carbon office schemes in London.
Mace has been acting as construction advisor during the planning stages of the £160m project, which will expand the building’s space from 48,000 sqm to 75,000 sq m.
The existing 1980s constructed 10-storey building will be stripped back to the frame and extended three floors up while an extra basement level is excavated.
Designs drawn up by architect KPF will see a swimming pool and gym built in the deeper basement with the new 13 storey’s above-ground topped off with gardens and a public rooftop restaurant.
Orion Capital Mangers paid BT £209m for the building a year ago. Property consultant Montagu Evans is taking the project forward on behalf of the owners.
Much of the structural frame will be reused, speeding up the building programme while helping to make the office project net-zero carbon enabled with the use of photovoltaics and air source heat pumps.
Marta Galiñanes Garcia, design director at structural engineer AKT II, said: “The former BT HQ is one of London’s most unique buildings and we’re excited to be a part of the reinvention of the structure, implementing a ‘retrofirst’ approach for this scheme.”
AKT II’s specialist façade engineering team plan to reuse the existing stone cladding, modernising it to create a new, high-performance building envelope.