4 Pwll-y-Min Crescent

4 Pwll-y-Min Crescent is part of a terrace of ten houses designed in an unusual style that combines elements of Moorish, Arts and Crafts, and early Modernist architecture, featuring flat roofs. The houses are finished in painted render and have flat roofs with coping. They include multipane casement windows set beneath hoodmoulds and boarded doors with a central glazed quarried light. The terrace is two storeys high and includes a tower room.

While the units are similar, they are not identical. Each house generally has a doorway located roughly in the center, adorned with mosaic work in a lunette, and flanked by small hall windows. Above the entrance, there is a 2-light casement window. One side of the entrance features an advanced block with a two-storey splayed bay window, while the other side has a stepped-back square turret with a flat roof that rises above the main roofline. The turret has a single window on each storey and a doorway leading to the flat roof. Set back from the turret is a narrow bay that links separate properties, and projecting in front of the turret and the entrance bay is a single-storey flat-roofed block that also connects properties. The rear of the house has a plain three-window elevation.

The terrace features swept and stepped parapets, although they do not match, particularly at Nos. 3 & 4 and 5 & 6, which form the center of the terrace. The overall design is enhanced by a curved yew hedge with individual boarded gates that have full-width hinges. Notably, No. 4 has plastic windows and a doorway in the projecting block.