Tan-y-dderwen

Tan-y-dderwen, a pair of deliberately asymmetrical cottages located in Abergwyngregyn, were built in a mild Gothic style characteristic of the estate's architectural choices. The cottages are constructed of snecked rubblestone, with a slate roof featuring bargeboards to slightly overhanging verges. The main range runs roughly parallel to the road, with a projecting gable set to the right. This gable contains two-light windows with eight panes on each floor, each featuring slate sills, stone lintels, and voussoirs forming segmental relieving arches. A lean-to porch with a 20th century glazed door serves as the entrance to No. 2 cottage. The entrance to No. 1 cottage is on the far left, through a 20th century half-glazed door below a slate-roofed lean-to that brackets the doorway and connects to a gable. This gable incorporates a multi-paned canted bay window on the right, topped by a raking dormer with a two-light, twelve-paned casement window that breaks the eaves. Brick ridge stacks with rebated diagonal shafts are positioned to the left and right of the gable; the right stack is rendered, and a similar stack is located behind the ridge on the left. Single-storey additions from the 20th century have been added to each cottage. The interior was not inspected at the time of survey.