The survey comprised: A written description of the building and its local context; Scale drawings of existing plan and elevations; A photographic record including the overall character of the building, as well as detailed views of any architectural features and fixtures and fittings. It is difficult to assign a function to this building. It is clearly a structure associated with the former RAF Zeals airfield (Plate 7) and is not a pill box or air raid shelter. It may have been used as a substation or generator house, possibly a back-up in case of mains failure.