Plasnewydd Presbyterian Church and attached Hall

Plasnewydd Presbyterian Church is a Gothic chapel with an attached hall at the rear, built from pennant stone in low courses with bathstone dressings and banding, topped with slate roofs. The chapel faces Plasnewydd Square and features a gabled front divided into three bays, with shallow buttresses and a central corbelled bathstone pinnacle. It has a pair of two-light Gothic windows with vesicas at the heads, and hoodmoulds adorned with floral stops. The broad Gothic doorway has a hollow chamfer and floral panels, topped by a hoodmould with a finial, leading to boarded doors. There are trefoil windows in the side bays.

The front of the chapel is flanked by stair projections, each with a single window at the upper level and paired Gothic windows at the ground floors. The left projection has a hipped roof, while the right projection develops into a polygonal bell turret, featuring an upper stage and a flared spirelet made of bathstone ashlar, complete with lucarnes, a band of quatrefoil panelling, and gargoyles at the angles, along with lancet windows.

The elevation facing Keppoch Street has four bays separated by shallow buttresses, with an ashlar band between the floors. The upper level contains two-light windows with Gothic heads, while the lower level features two-light windows with cusped heads. The south elevation presents a simpler window treatment, lacking banding, with red brick buttresses and a vestry.

At the rear of the chapel, facing Keppoch Street, is the hall, also constructed of pennant stone with bathstone dressings and a slate roof. It has a gabled front with a group of three lancets and a small oculus above, flanked by shallow buttresses. The sides of the hall have roofs that sweep down over aisles, each featuring a lancet window and a Gothic doorway with a boarded door.

Inside, the chapel is said to have a gallery on three sides with classical detailing supported by iron columns with classical capitals. The gallery has a bowed frontal with pierced metal patterning. Tall Composite columns support a wooden boarded ceiling, which is segmental in section over the body of the chapel and flat over the galleries. There is a concave timber frontal to the organ gallery and bowed pews throughout.