Old house at Llechdwnni

The Old House at Llechdwnni is a 2-storey building constructed of rubble stone, featuring a slate roof and a large square stone chimney on the right side, with an external stack offset in the left gable end. The front has two windows and an offset doorway topped with a shouldered head. The lower storey has metal-framed windows, while the upper storey contains two small wood-framed windows, one of which is obscured by vegetation. On the uphill gable end, there is a first-floor doorway with a missing threshold; its Tudor head is set beneath a broader relieving arch, indicating that the masonry may have been reused from an earlier, wider opening. In the downhill gable end, where a former eastern wing once stood, there is a doorway in the upper right, featuring a wooden lintel with brick dressings. The rear of the house has an outshut with a partially collapsed catslide roof.

Inside, a cross passage retains its original cobbled floor and leads directly to the hall on the right side, which features a central stop-chamfered beam and a fireplace lintel. It appears that the downhill gable end is an addition, suggesting that the house was originally an open-hearth hall house. The upper storey boasts a 5-bay roof supported by collar-beam trusses with scarfed feet and two rows of purlins.