Building 77 (Guardhouse), Aircraft Storage Unit Site

Building 77, also known as the Guardhouse, is an office building constructed in 1938 by the Air Ministry's Directorate of Works and Buildings. It features bath stone ashlar on brick with a hipped profiled tile roof. The building has a rectangular plan and is a single-storey structure with five bays. The front includes a verandah or loggia supported by stylised columns, with panelled double doors that have an overlight, flanked by ashlar cheeks. On either side of the doors are two 2-light steel casements with horizontal glazing bars, and there is a similar casement in each end wall.

Inside, the building retains its original joinery, including panelled doors. This guardhouse is a notable example of high-quality architecture from the post-1934 RAF era and is part of a remarkably complete technical group at Hullavington Barracks. Hullavington opened on June 6th, 1937, as a Flying Training Station and is significant for its architectural quality, reflecting the improvements made to air bases during the RAF's expansion after 1934. Its location in the west of England, alongside other training and maintenance bases, led to its selection in 1938 as one of several Aircraft Storage Units for storing essential reserves for the operational front line. For more information about the site, refer to Buildings 59, 60, and 61, which house The Officers' Mess.