Lanwithan House

Lanwithan House is a house, dating to 1827, built for William Foster of Lostwithiel, with later alterations and additions to service wings, which have been converted into separate accommodation. It is constructed of slatestone rubble, with granite ashlar facing to the front and sides, and the service wing is partly brick. The roof is slate, with granite ashlar stacks at each corner and a deep moulded eaves cornice. The house has a double-depth plan and three principal rooms facing the garden. The entrance is on the left side, leading to a wide hall at the rear, with the principal rooms to the front and service rooms to the rear, and a stairwell in the rear centre. A two-storey service wing extends to the rear right and left.

The front elevation has two storeys on a plinth, with a 2:1:2 bay arrangement, the centre bay recessed. The ground floor windows are tall four-pane sashes, and the first floor windows are sixteen-pane sashes. The left side has four bays at first floor with sixteen-pane sashes, and ground floor windows which have three tall twelve-pane sashes. A wooden Ionic portico is positioned second from the left, with a round-arched doorway and panelled soffit, and double panelled doors with a fanlight featuring splayed glazing bars. Attached to the left is a two-storey service wing constructed of slatestone rubble with an end bay in brick. The first three bays of the service wing have two sixteen-pane sashes and a central twelve-pane sash at both ground and first floor, while the brick bay has a ground floor sixteen-pane sash and a glazed door. This wing has a hipped roof with two stacks at each end and a granite ashlar ridge stack. The right side of the main house has three bays, with tall twelve-pane sashes at ground floor and sixteen-pane sashes at first floor. A two-storey service wing extends to the right, consisting of three bays with sixteen-pane sashes and a central twelve-pane sash at ground and first floor. The rear wings form a narrow courtyard to the rear, with varied windows and doors on the inner sides. The rear of the main range is rendered, with a tall twelve-pane sash window illuminating the stairwell.

The interior principal rooms on the front include a drawing room, library, and dining room, all accessed via six-panelled doors with window shutters. These rooms feature plaster cornices; the drawing room has a marble chimneypiece with colonettes, and the library also has a marble chimneypiece. The stairwell contains an open-well stair with a moulded handrail.