Capel Carmel (Eglwys Bresbyteraidd Cymru), including forecourt railings and pier

Capel Carmel is a classical-style chapel of the Presbyterian Church of Wales, built as a symmetrical 3-bay gable-end structure. The front elevation is finished in scribed roughcast on a slate-stone plinth, with a slate roof hipped over the outer bays where it incorporates a band of fishscale slates and iron apex finials. The gable is coped and slightly projecting over the wider central bay, with rusticated pilasters dividing the bays, a parapet balustrade over the outer bays, and panelled corner piers.

The openings throughout are generally moulded round heads with faceted keystones. The central entrance features double panel doors under a round-headed margin-lit radial glazed overlight, flanked by narrow 2-pane horned sashes on corbelled sills. Other windows are margin-lit small-pane horned sashes, also on corbelled sills. The outer bays have 8-pane square-headed windows at ground-floor level and taller round-headed gallery windows of similar design. The central bay has a triple gallery window of 8-pane sashes beneath plate-tracery circles of two quatrefoil variations, with the 2 central mullions carrying Corinthian capitals. The word 'Carmel' is painted on the roughcast above this window.

The 4-window left side wall is pebble-dashed with margin-lit 8-pane horned sashes on corbelled sills, these taller at gallery level. The right side is rubble stone with similar windows, though only 3 at lower level where a Sunday School porch occupies the right side. Ground-floor windows have stone lintels while gallery windows sit beneath the eaves.

An early 20th-century organ lean-to is mostly obscured at the rear by a lower later lean-to vestry extension. The vestry's left side extends against a coped wall between the chapel and Sunday School, incorporating the Sunday School porch, and features a roughcast stack.

The entrance vestibule contains a decorative tile floor and ceiling rose. Opposite the entrance is a glazed panel with coloured glass, flanked by panel doors to the main chapel and closed-string gallery stairs. The main chapel has scribed-plaster walls and boarded wainscot at both ground and gallery level. The flat ceiling rests on a plaster cornice with central and subsidiary roses. A 3-sided raked gallery is supported on cast-iron posts with moulded capitals and has a panelled front with low-relief foliage panels projecting on brackets, with a clock at the centre. Behind the pulpit is an early 20th-century high elliptical arch with panelled reveals incorporating egg-and-dart moulding, housing the organ.

The ramped floor accommodates pews with shaped ends, with similar pews in the gallery. The set fawr (main seating) is later work, with panelled back and upper tier of balusters. The pulpit has a matching arrangement of panel and balusters with a central fret-cut panel. Outer stairs have turned balusters and newel posts. Against the rear wall left of the pulpit are memorial brass plaques commemorating the 1914-18 and 1939-45 wars.

The forecourt sits above a rubble-stone retaining wall with freestone coping and is enclosed by cast iron railings with finials to the mid and top rails. The railings incorporate shaped cast iron lamp posts. At the right end the forecourt railings return and abut the chapel front. At the left end stands a monolithic square freestone pier with pyramid cap (the gate and the other pier have been removed since the previous survey in 1975).