Ystradfaelog

Ystradfaelog is a two-storey, three-unit house with a lobby entrance to the left of the center. It is built with three tiers of box-panelling on a weather-boarded sill beneath a slate roof, featuring a pair of diagonally-set stone stacks. The upper tier of panelling has diagonal braces. The entrance has a late 20th-century wooden boarded door with two small lights. To the far left, there is a long three-light wooden window, each light containing four panes. Immediately to the right of the entrance is a small four-pane window, while to the right, a large three-light wooden window with an opening casement cuts through the mid-rail, necessitating a horizontal tie beam above it. To the far right, there is a doorway leading into the kitchen, which has late 20th-century split doors and is flanked by small windows with quarry glazing. The upper storey features four windows, with two-light wooden casements on the left and far left (the latter being a replacement), and iron casements on the right and far right, consisting of two-light and three-light windows, respectively.

At the rear, there is a long catslide lean-to with a short rear wall made of lime-washed random stone under a replaced slate roof, which includes two windows offset towards the right. There is a mid-20th-century flat-roofed dormer to the left of center and two skylights. The east gable end is weather-boarded and has a two-light wooden casement window offset to the right and a two-light uPVC window offset to the left in the upper storey. To the left, there is a half-lit 20th-century door leading into the lean-to. The west gable end is made of lime-washed random stone, featuring a three-light uPVC window offset to the left and a small window in the upper right. Adjoining the southwest angle of the house is a single-storey hipped-roofed block of random stone, possibly a former dairy, which has a boarded door at the front and a gabled half-dormer at the rear with a late 20th-century metal-framed window. The interior was not seen during the resurvey.