1 Tros yr Afon

1 Tros yr Afon is a late-Georgian, two-storey house featuring rendered walls and a slate roof, with a roughcast stack on the left side. The entrance front is nearly symmetrical with three bays, including a narrow entrance bay and gabled outer bays adorned with fretwork barge boards and finials. The entrance has a polygonal porch supported by thin Gothic wooden arches, which is infilled with glazing and features a glazed door beneath a swept lean-to slate roof. Inside, there is a half-lit panelled door, and above it is a 12-pane hornless sash window.

To the left, the gabled bay includes a two-storey canted bay window with a swept roof and 12-pane hornless sash windows, positioned towards the inner side. The right-hand bay mirrors this with a similar offset two-storey bay window, accompanied by plain hornless sash windows to its right, featuring 12 panes in the lower storey and 16 panes above. The left end wall showcases a two-storey canted bay window that rises above the eaves, also with a swept roof. The lower storey has a central glazed door and 8-pane horned sash windows on the outer facets, while the upper storey contains a 12-pane sash window.

A two-storey, two-window wing projects forward from the right end of the house, constructed of painted brick with camber-headed openings and an upper-storey sill band, topped with a hipped slate roof and a central roughcast stack. The lower storey features tripartite sashes, and the upper storey has plain sashes, each with small panes in the upper sash and two panes in the lower sash. The rear of this wing includes two 4-pane sash windows and an inserted window in the upper storey, along with inserted windows and a door in the lower storey, and a blocked original door.

At the rear, there is a 12-pane hornless sash window in the upper storey and a replacement window and door in the lower storey. A parallel two-storey wing of brick extends behind No 2, featuring replacement windows except for a stair window on the left side, which has etched glass in a 2-pane sash.

The interior is centrally planned, with an entrance hall that has a stop-chamfered cross beam. The rooms on the right and left feature boxed beams. At the rear of the entrance hall, there is a simple straight stair with a plain newel and balusters.