Detached School room from Seion Capel y Bedydddwyr/Seion Baptist Chapel

The building is a detached school room associated with Seion Capel y Bedydddwyr, a Baptist chapel. It is constructed from rubble stone and features a slate roof. The front, dating from around 1897, is unpainted roughcast with raised cement dressings. The two-storey front has arch-headed windows and a central arch-headed door framed by a moulded architrave with a keystone. The entrance has paired panelled doors and a traceried fanlight above. The windows are set in channel rusticated frames with arched hoodmoulds, with larger outer windows and two slightly shorter windows in the centre of the first floor, which are positioned higher than the outer windows. Above these is a small traceried roundel. The upper windows feature timber tracery with two lights and a plain circle above. The gable is coped and topped with a block finial, and there is a rectangular plaque that reads 'Seion Capel y Bedyddwyr 1843, 1897'. The corners have angle pilasters with pedestal blocks above.

The side elevations, likely from 1843, are also made of rubble stone and have a single window on each floor with cut stone heads. The end walls feature arch-headed windows with cut stone voussoirs. Inside, there is a wood boarded roof, a gallery, and pews.

The schoolroom may date from the early 20th century and incorporates a building with an external stair noted on the 1908 Ordnance Survey 25-inch map. It is built of rubble stone with a slate roof and has a west end stack. This single-storey structure has an arch-headed door and two windows facing the forecourt, while the east gable end facing the road is rendered and features two arched windows. The timber windows are two-light tracery with a circle above. The door on the forecourt side has matching tracery in the fanlight and ledged doors. The windows to the right have timber arched heads with paired fixed lights and top lights above, which may have been altered. A low rock-faced stone wall runs from the north of the schoolroom, featuring central gatepiers, end piers, and iron spearhead railings, along with matching centre gates.