Llysdinam Hall is a two-storey, square-plan house in free classical style. It was built in 1829 by the Rev. Richard Venables, Archdeacon of Carmarthen but was much enlarged during the late 19th century. The house was reduced and remodelled in 1934 by Guy Elwes, when 2 large wings, of the Victorian and Edwardian periods, were taken down. Three full-height bows were added, including an art-deco porch bow to the garden front.
