This building formed the southeast corner of the courtyard enclosure buildings. It was restored by Beale & Son, builders from Tunbridge Wells, and provided the pair with separate bedrooms, a shared sitting room, and Nicolson's writing room. His diary entry for 20 April 1933 records: "My new wing has been done. The sitting room is lovely ... My bedroom, w.c. and bathroom are divine". Of two storeys in red brick, with an extension dating from the 1930s, South Cottage has a Grade II* listing.