 The Home Farm buildings were built in the 1880s , split over two levels . To the south is a two @-@ storey covered yard with a timber roof structure , used for the rearing of farm animals . On the upper level is the main yard , where to the east and west are two wings , one side of which housed the former piggery . The farm offices make up the north wing , to fully enclose the square but gently south @-@ sloping yard . 
