Upper Trerew Farmhouse (aka Little Trerhiw)

This is a 16th century farmhouse with an addition dating to the 19th century, arranged in a linear layout. The farmhouse is constructed of painted rubble stone with brick dressings and shallow stone sills. The original section has a 20th-century composite slate roof, while the addition has a slate roof with brick end stacks.

The southwest front of the original range is lower than the rest of the building. Ground-floor window openings are arched with brick. A blocked entrance doorway is located off-centre, flanked by a 6-pane casement window to the left and a 9-pane window to the right. A 4-pane window is located on the first floor. The 19th-century addition to the left has skewback lintels with brick voussoirs. The first floor has a 16-pane hornless sash window to the right and a similar style 20th-century window to the left. The ground floor features a 20th-century brick porch with a slate lean-to roof on the right and a 20-pane window to the left. The southeast gable originally had a granary, but the steps no longer survive. A boarded door with a timber lintel leads to the former granary from the first floor. To the right of this is a 5-light mullion window, and a 20th-century glazed door is on the ground floor far to the left.

The entrance to the 19th-century stair lobby leads into the addition. The staircase is of 19th-century design, featuring a closed string, a chamfered newel post with scroll stops and an octagonal cap, and square balusters. A ground-floor room to the left contains a late 19th-century black marble fireplace surround with twin columns and volutes (previously from Maindiff Court). To the right of the stair lobby is an impressive, chamfered, Tudor-arched oak doorway that once formed the broad gable entrance to the 16th-century house. The hall features a massive, chamfered ceiling beam with hollow and fillet ('Wern-hir') stops and joists with roll moulding. A transverse post and panel partition with a Tudor-arched doorway is located at the upper end of the hall, indicating the line of a former axial partition that likely divided the room into a parlour and a small pantry. A further deep chamfered ceiling beam with straight cut stops and chamfered joists with diagonal stops is also present. The fireplace has chamfered monolithic jambs with a massive monolithic lintel, and herringbone stonework to the back-wall of the hearth. A 20th-century staircase is located to the left of the fireplace (the original fireplace staircase no longer exists).