20, St Thomas Street

No. 20 St Thomas Street is a town house that was later converted into two houses. It dates from the early 19th century and features rubble walls with timber lintels. The roof on the right is a steep dry scantle slate, while the left side has a lower pitch covered in dry slate. There is a cast-iron ogee gutter and a brick stack on the left. The building has a shallow-depth plan and stands two storeys over a basement on the left, with a three-window range. The windows are early 19th-century sixteen-pane hornless sashes, except for horned copies on the ground floor. The central entrance has a six-panel door, with a probable later doorway also featuring a six-panel door, accessed by a flight of four granite steps. To the right, there is a four-pane overlight, and a blocked basement doorway is located on the left. The interior has not been inspected.