Great Brithdir Farmhouse

L-shaped 3-unit lobby entry house with N porch, built on a stone plinth. Random rubble with slate roof. Centrally placed stack, the base of which is roughcast, the remainder a brick rebuild c1970. N (front) elevation has a gable to the right, and irregular fenestration, consisting of 3 casements. To the left is a wide buttress. Gabled porch is centrally placed, with a ledged and battened door on the W side. E gable has a single casement window at eaves level. W wall built against an earth bank, with a single casement window, and a fixed light with concrete reveals below the wall plate. S wall has 2 casement windows. E wall of S wing has a lean-to porch of corrugated metal, and a ledged and battened door at the angle with the front range. To the left in the E wall is a casement window. S gable roughcast, with a brick stack.

Plan consists of former kitchen to front left, parlour to front right, and an originally unheated room in cross-wing. Kitchen has a single chamfered beam with stepped stop, and separated by a partition is a service room, reached down stone steps, through a ledged and battened door. Service room has a flagstone floor. Parlour has a spine beam with roll-moulded chamfer, and also contains a quarter turn timber stair reached through a ledged and battened door. The porch has a flagstone floor. Inside the porch is a fragment of a timber beam dated 1695.