Furnace House

Furnace House is a bastle house dating from 1639, with initials "T K" carved into the lintel above the byre entrance. It was extended in the late 17th century and remodelled in the early 18th century, possibly around 1710, as evidenced by a date on the jamb of a first-floor door. The building is constructed of large rubble stone with dressings and has a stone slate roof.

The original bastle section is two storeys high and three bays wide. It features an off-centre doorway, partially blocked, with a chamfered surround. A first-floor door is positioned directly above, with tooled stone jambs and lintel. To the left of the doorway is a small first-floor window set in a tooled stone surround, and to the right, a small ground-floor window and a larger first-floor window. A left extension has a doorway with a wood lintel, and a small window with a wooden frame to its left. The right return side has a ground-floor door and a small attic window with a wooden frame. Outshuts are attached to the rear.

Inside the bastle, the byre entrance has a chamfered triangular head. The bastle boasts an internal set-back on the rear (north) wall at first-floor level. At the east end are remaining features of an 18th-century corbelled fireplace, while the roof is supported by a central collar-beam truss with slightly curved principals. The gable end of the extension reveals remnants of a saltbox rebated for a door and a pair of corbels for an original stack.

The building has historical links to early lead smelting in the area and represents a rare example of a dated bastle. It was empty and derelict when surveyed.