12 Gwynant Street

12 Gwynant Street is part of a row of cottages numbered 10 to 17, built from roughly-squared stone blocks and topped with a continuous slate roof featuring a tiled ridge and plain, shared chimneys. A masonry break between numbers 11 and 12 indicates that they were constructed during different building campaigns. The cottages are designed as single window units arranged in reflected pairs, with alternating paired inner doors and windows. All the doors are from the 20th century, mostly modern.

On the ground floor, the window at number 10 (Llys Emrys) is a projecting rectangular bay with a slated roof, while numbers 15 and 16 feature later 19th century plain sash windows. All cottages except number 10 have returned slate labels and slate lintels above their ground floor windows. For the upper windows, number 16 retains its 19th century 9-pane sash under the eaves, and numbers 10 and 11 have late 19th century plain sashes; the remaining upper windows are modern. This group of cottages is significant as a cohesive architectural ensemble.