Pentwyn

Pentwyn is a large house dating from the 18th century, exhibiting group value as a significant landmark. The house is constructed of stucco, with slate roofs and decorative bargeboards. The asymmetrical front elevation, facing northwest, is characterised by a series of gabled bays. To the left, a gabled bay features an attic and first-floor mullion and transom window, and a projecting, shallow-gabled bay window with a four-light mullion and transom window on the ground floor. A small first-floor window is followed by a small gable containing a slit window above a first-floor mullion and transom window under a hoodmould. A single-storey porch with a shallow gable shelters a Tudor-arched doorway with boarded doors and decorative hinges. An off-centre projecting gabled block features a small attic window, a first-floor oriel window, and a three-light mullion and transom window under a hoodmould on the ground floor. Further to the right, a narrow gable contains a slit window, and a first-floor mullion and transom window under a hoodmould, with two similar, but narrower, ground-floor windows. The northwestern elevation contains three first-floor windows, and a simple, round-headed Georgian-style doorway with an overlight, now beneath a modern portico. Other openings have been altered. The rear return of this wing has two gables, small attic windows, mullion and transom windows to the first and second floors; a projecting bay window with a balcony is located to the left. The return to the right features a blind window, a mullion and transom window, and a projecting bay window on the first floor, and a mullion and transom window under a hoodmould on the ground floor.

A bay window with detailing similar to the front porch projects at a right angle. The rear, gabled end of the southeast wing has very deep, bracketed “Swiss Cottage” style eaves over a smaller gable of a projecting first-floor window, below which is a projecting bay window with a balcony. The southeast elevation includes an unusual, projecting and bracketed chimney with a twisted stack, and a small gable with a first-floor mullion and transom window. On the ground floor, a three-bay glazed loggia, possibly formerly open, is present. A projecting gable end of the front block features an attic window, and a two-storey square bay window with mullion and transom windows and heraldic shields between floors.

The principal ground floor rooms are mainly in a “Georgian Gothic” style. The hall contains a Gothick arch and a staircase, with panelled ceilings. Doorcases are in a Georgian style with Gothic detailing, complemented by similar fireplaces. The dining room, in the style of around 1900, has ceiling beams, a deep frieze with swags, and a deep Gothic fireplace.