Bethel Addoldy yr Annibynwyr including Ty-capel, Schoolroom and associated teacher's house

The chapel is of squared and coursed local stone with limestone quoining, and has a hipped slate roof. Symmetrical front elevation of 3 bays, the centre set forward and gabled, and has an attached single storey wide hip-roofed porch sheltering the entrances, with boot scrapers either side. The centre of the porch is open, with two gates and spear-headed railings. Four-panelled doors with grained finish lead to the body of the chapel. Above the porch, twin margin-glazed windows with segmental heads, and a framed datestone in the gable. Each side bay has tall 12-pane fixed light windows.

The single bay caretaker's house is attached on the right and set back. Twelve-paned sash window to the ground floor, 9-pane above, and a modern door, all openings having heavy stone lintels. Gable stack. A lean-to is set back at the side, with a boarded door. Modern extension to the rear.

The schoolroom is attached and set back on the left of the chapel. Single-storey, rendered, with a slate roof set lengthwise to the road and terminating in the 2-storey gabled teacher's house. Central gabled porch to the schoolroom with a framed and battened door and overlight. Two small windows to the side. The house is 2 bays deep with a central stack. Door to the rear bay and end lean-to.

The spear-headed front railings to the right of the chapel, extending over Ty-capel are set on a stone wall, with a gate matching those of the chapel. The railings and gate to the school are similar but to a 1903 design.

The ceiling of the chapel is divided by two ornamented deep cross beams into three transverse compartments. Extensive pine pews seating approximately 280 persons, forming a single central bank and cross benching raked towards the sides. Enclosure to the set fawr panelled with a balustered crowning gallery and rounded corners, and steps rising to the pulpit, also galleried. The recess behind the pulpit has a window. Reading desk is provided with a drawer. On the walls, two memorial tablets to the dead of both world wars.

The school room has a 3-bay open roof and ceiling with a central ventilation rose. Pine dado. The room is furnished with iron-framed reversible benches with hinged writing desks. Steps at the end rise to a door to the house.