British preservation body Historic England awarded the building, which is iconic of British postmodernism, Grade II* listing to ensure it cannot be demolished, extended or altered without special planning permission.
Described by Historic England as a "highly significant late work by one of Britain's foremost post-war architects", Stirling's design features a distinctive striped facade of alternating pink and buff sandstone.
A columnar clock tower and balconies project away from the wedge-shaped form, which stands beside Bank Underground Station in London's financial district.
Stirling designed No 1 Poultry with Michael Wilford and Associates between 1985 and 1988. It was built between 1994 and 1998 – making it the final completed project by Stirling, who died in 1992.
The project was commissioned by City Acre Property Investment Trust, a company owned by the developer and former Arts Council chair Peter Palumbo, following the rejection of an earlier design by Mies van der Rohe.
Set on a wedge of land between Queen Victoria Street and Poultry in the City of London, it attracted criticism for its placement within the Bank Conservation Area – and the demolition of several Grade II-listed buildings to secure the site.
The building contains shops across its ground and basement levels, with five floors of offices and a manicured roof garden and restaurant above.
We took a more indepth look at No 1 Poultry's significance to postmodernism in our series dedicated to the architectural movement, delving into the factors that shaped Stirling's design.