23 Derllwyn Road

This is a house built from ironstone rubble with detailed ashlar dressings, featuring a Welsh slate roof. The roof has a stone ridge stack shared with number 24 on the left and a tall yellow brick stack on the right. The house is two storeys high, with the first floor displaying a range of two casement windows that have cambered arched tooled ashlar voussoirs and a central blind window. The left window has 3/3 panes.

On the ground floor, there is a central later wooden porch in front of a boarded door. To the left, there is a 6/6 pane sash window with a segmental arched brick voussoir and surround, while to the right, there is another 6/6 pane sash window with stone voussoirs. The right side of the house features stone quoins.

Inside, there is a spiral stone staircase located beside the fireplace, which is now partly covered.