Built in the 1930s and extended in the 1980s, the existing pavilion houses squash courts, changing rooms and social facilities for field sports. It is located just above Granchester Meadows, commanding striking views over the River Cam and the College's sports fields.
The design for the extension involves extending on the roof of and adjacent to the existing building to the south and east, providing a new 3-bed flat at first floor level and improved storage areas for the groundsman. A lightweight structure means most of the existing building remains untouched, whilst the brick cladding unites new and old. The project also involved refurbishment of the existing squash courts, and changing and social facilities.