Piercy & Company has lodged proposals to strip a 1980s office building that forms part of the City of London’s Broadgate Campus back to its core and extend it upwards.

The practice’s £250m plans for British Land and investment firm GIC would deliver a 14-storey building on the site of 1 Appold Street, to the north of Make Architects’ 5 Broadgate. The scheme would add six storeys of office space to the structure, boosting its floorspace by 20,000sq m to 52,000sq m.

The current building on the site is an eight-storey block with two basement levels that was designed by Skidmore, Owings & Merrill. It backs on to the grade II-listed Liverpool Street Station shed and the Exchange Square outdoor area.

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