Rhydarwen (also known as Rhyd-owen).

The north-east part of the house, interpreted as phase one, the oldest part, has a roof truss incorporating a small boss, said to be unique in south-west Wales. Remant of wall paintings survive in this section. The undercroft or lowest storey has a large fireplace with bread oven at left. There are said to be slit windows to the south. Full-width opening to the window projection, with vaulted roof. The south addition to the house, interpreted as the second phase, has a C15 four-centred doorway at its west side, now facing the C18 staircase. The phase-three west part contains a cross-passage and restored Jacobean taircase, divided from the main room. The roof trusses are said to be similar to those at Derwydd, another house associated with Sir Rhys ap Thomas. There are also two fine carved timber doorheads (illustrated by the Royal Commission). The style is similar to carvings at Derwydd. One head displays the arms of Sir Rhys within the Order of the Garter. The other contains what may be portrait male and female heads in profile.

A large house of irregular form, in randomly coursed or uncoursed local sandstone with selected larger stones as quoins. The roof outline adds to its character: slate, at two levels, the eastern part corresponding to the first phase, including a long catslide to the south corresponding to the second (but with large modern dormer window); the taller western part corresponding to the third. The western part has modern dormer windows to the north. At the centre of the east gable is a very large phase-one chimney with four offsets. It has a bread-oven extension at the south side. At the centre of the south wall of the taller part of the house is a second very large phase-three chimney, flush with the wall but with one rear offset facing the roof. The principal front of the house is to the north, and is a six-opening range under a stepped roof, with projections at each end. At left is a gabled two-storey window projection to the phase one part, with a small square timber window with mullion to first floor, and a tall stone mullion and transom window with trefoil heads beneath. The elevation between the projecting parts is irregular, part consisting of three and part of two storeys, with modern square windows wit renewed oak lintels. Numerous putlog holes. At the right is another two-storey window projection to the phase three part, but rather less prominent, with modern windows, under a continuation of the main roof. The sides of this projection have original slit apertures. At the centre of the elevation is a large boarded door with a four-centred limestone arch. The west gable elevation contains a door at right, and two window openings; also many putlog holes. One window in the attic and another at first-floor level perhaps originally a gardrobe doorway. The rear elevation contains a two-light mullion window to the upper storey at left and two small rectangular windows to the stairs position at right of the taller part. Recent additions in a small walled yard at east.