Farm building associated with Nant-y-mynach

This is a combined farm building associated with Nant-y-mynach, dating from an unspecified period. It has an unusual form and is constructed of irregularly coursed rubble with flush joints. The roof is made of old thick slates without guttering, featuring blue ridge tiles. The building has six bays and is situated uphill against the road for direct access.

At the lower end, there is an original barn with three bays, which includes high double timber doors in the central bay set back below an oak lintel. The two outer bays have two tiers of slit vents, and there are five vents in the south gable end. An open bay to the north was originally a through cartway to the field at the rear but is now walled up at the back, with the upper wall of this bay built of stone to half height. Beyond this bay, there is a cart shed and stable, featuring a low double door facing the road and a rectangular pitching opening above.

The northern end bay has a boarded door on the ground floor with a small square window beside it, although the frame is missing. There is a similar square pitching opening above this door. Both bays five and six have four high-level slit vents at the rear, and there is an opening to the loft at the north gable end.

The upper end of the building features a truss with a cambered tie beam and raking struts supporting the principal rafters, which carry a single tier of purlins.