Detached Agricultural Range to the south of Bontglantanat Farmhouse

An agricultural range built against a bank at the south side of the farmyard, facing north to the farmhouse; heightened and extended to east, with an open-fronted additional shed to west and informal low lean-to extension to rear (south). Uncoursed quasi-rubble slate masonry and timber cladding where heightened. Slate roof (partly replaced with sheeting) with tile ridge.

Six doors and two windows to the front (north) elevation with timber lintels; two loft hatches; ventilation slits. The shed added at the right (west) end is an open-fronted livestock shelter at a higher ground level. Dormer at rear.

The building has been used as a cowshed, and a transverse feeding walk with low side walls survives in the middle bay. Some stone paving.