The original designs for the building at 22-25 Northumberland Avenue were commissioned from Robert Walker FRIBA by the Nevill family as a headquarter for their Turkish Bath business. The building was constructed in 1884.
The refurbishment of the basement, ground and first floors, including new lift and stair access, provides additional space for the neighbouring premises of the Royal Commonwealth Society. The new facilities created include a dedicated reception to its bar area, conference facilities, office space and an auditorium accomodating over 200 people.
The space for the auditorium was created by removing four columns using two sets of paired 406 UC sections to obviate the need for temporary works. These were portalised at their ends by raking the columns in to reduce the span and tying down the back span created, to achieve a 12m clear span space using a minimal depth structure.
The works were carried out whilst the four storeys of residential accomodation remained in occupation above. The new facilities were opened by the Queen in June 2006.
Client: Royal Commonwealth Society
Project Value: £3.2M