Lower Tregantallan

Lower Tregontallon is a cottage dating from around the mid-19th century, with later extensions and alterations made in the 19th and 20th centuries. It is constructed of limewashed granite rubble, featuring dressed granite lintels and cills, and has a grouted scantle slate roof with gabled ends. The building has brick stacks at both gable ends.

The cottage has a rectangular plan with a lower ground level on the right side. It is two rooms wide, with the right-hand room extending the full depth of the house and heated by a gable end stack. The left side contains two rooms, with direct entry into the front room; the left-hand gable end stack likely serves both rooms. There is a later 19th-century outshut on the left end. In the 20th century, a doorway and lobby were added at the center of the back between the two rooms.

The exterior is two storeys high and features an asymmetrical two-window arrangement. On the ground floor, there is a plank door to the left and a late 19th-century 12-pane sash window to the right. On the first floor, there is a late 19th-century 12-pane sash window above the doorway to the left. The lean-to outshut on the left end has a blind front wall. The symmetrical two-window rear elevation has 20th-century four-pane sashes and a 20th-century porch at the center. The interior has not been inspected.