In 1676 the first part of today's Senior Common Room was constructed, just north of the chapel. Its ceiling, completed in 1742, features the craftsmanship of Thomas Roberts, who also worked on the Radcliffe Camera and the Codrington Library. Various additions and renovations took place in 1826, 1900, 1936 and 2004–2005. The latest renovation and extension to the Grade I building was by MJP Architects and received two awards in 1996, the Design Partnership Award from the National Association of Shopfitters, and the other from the Royal Institute of British Architects.