25 Heol-Y-Doll

25 Heol-Y-Doll consists of ten two-storey cottages arranged in reflected pairs with a central tunnel passage. The cottages have colourwashed rubble front walls and slate roofs, with some roofs renewed and others grouted. The chimney stacks are made of rubble and feature weathercourses, with some rendered. Most cottages have horned sash windows, with only one small pane window on the first floor of No 15. The other windows generally lack glazing bars, except for No 23, which has four-pane sashes. No 23 also has a later small pane casement window above the passage, while Nos 19 and 21 have modern windows. The ground floor windows feature cambered voussoirs. Only No 15 retains a boarded door; the others have half-glazed doors, and No 21 has a modern recessed door as a later alteration. The left end is scribed rendered, the right end is rubble, and the rear is colourwashed rubble with mostly modern windows, some lean-tos, and a modern cross range to the left. The passage is slate flagged and has whitewashed rubble walls. The pairs, Nos 19 and 21 and 25 and 27, have been combined into single properties.