4 Penybryn

4 Penybryn is a two-storey plus attic building, likely dating from the 19th century. The front is constructed of Llanfyllin brick, with a horizontal stringcourse separating the first and second storeys. The roof is slate-covered, with a central square brick chimney and a rectangular brick chimney to the left. Four gabled dormers feature timber framing with brick infill, curved struts over the collars, tripartite casement windows, 19th-century bargeboards and pinnacles, and slate hanging on the sides.

The front elevation has six bays on the first floor; one window, the third from the left, is blocked, while the others have casement windows beneath wooden lintels (the left window is narrower than the others). The ground floor has doorways in the second and fifth bays, with segmentally arched brick heads, wooden door frames, and boarded doors. The left bay features a broad segmental archway with glazing infill. The remaining ground floor bays have segmentally arched windows, with the third bay blocked and six-pane hornless glazing in the others. A gabled end to the left has a projecting chimney and a stone base. The first floor has twelve-pane sash windows to either side of the chimney stack, and the ground floor features rectangular casement windows on each side.

The ground floor of the left premises contains a large fireplace and exposed timber-framed partitions. The first floor at the rear is said to showcase heavy timber framing, with evidence of former windbraces, and the south gable has decorative lattice framing in its apex.