Nos 4, 5 and 6 and Attached Forecourt Walls and Railings

Nos. 4, 5, and 6 are three town houses located on the north side of The Square in Penryn. No. 5 dates from the 17th century, while Nos. 4 and 6 are either early 18th century or 17th century buildings that were remodeled in the early 18th century. The front of No. 5 features a render on granite ashlar, while the other two houses have rubble walls. They have a steep dry slate roof with four raking dormers at the front, and brick end stacks along with a lateral stack to the left of No. 4. The overall layout is arranged around a courtyard, with No. 5 having a single-depth range and a stair wing at the back left, a kitchen on the right, and a chamber above the stair wing. No. 4 consists of two ranges linked at the corner, and No. 6, to the right of No. 5, is double-depth with later additions at the rear. The houses are two storeys plus an attic and have a total of eight windows across the front. They feature late 19th or early 20th century twelve-pane horned sash windows. No. 5 has a pilastered doorway with consoles, a cornice, and a six-panel door located to the right of centre, while No. 6 has a similar doorway and door to the left. No. 4 features a pilastered doorcase on the left-hand return and an 18th-century coved cornice on the opposite side.

Inside No. 5, there is an original late 17th-century open-well closed-string staircase with heavy turned oak balusters, newels, finials, pendants, and moulded pine strings and handrails. The roof structure is unusual for the 17th century, featuring oak trusses with curved feet and no collars or tie beams originally; the truss feet are jointed onto the wallplate, which is supported by pine floor joists in the attic, similar to hidden joists in the floor below. This construction is comparable to that found in Nos. 24, 26, and 28 Lower Market Street. No. 6 includes an early 18th-century dogleg stair with turned balusters.

The attached forecourt features walls with granite plinths and wrought-iron railings that have turned stanchions and arrowhead finials on the bars.