High House is a Grade II* listed building in the Monmouthshire local planning authority area, Wales. First listed on 27 October 2000. Farmhouse.
High House
- WRENN ID
- silver-moulding-nightshade
- Grade
- II*
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 27 October 2000
- Type
- Farmhouse
- Address
- High House, Penrhos, Raglan, Whitecastle, NP15 2DJ
- OS grid reference
- SO 408 120
- Coordinates
- 51.8041, -2.85941
- Source
- Cadw listing
Description
High House is a substantial Renaissance farmhouse, likely dating to the 17th century. The house is faced in painted render and has an exceptionally high, steeply pitched slate roof. Massive rendered chimney stacks, with square bases and four tall, diagonally set flues, are positioned centrally on each roof slope. The main facade is a symmetrical gable front facing south. The upper gable is blind and is flanked by the large chimney stacks. The lower gable projects forward to create the two-and-a-half-storey entrance front, which has a monopitch lean-to roof. This roof has three 20th-century rooflights and is hipped, with the slope of the hips carried back on each side to blend with the main roof. The first floor has three two-light mullion windows with 2+2 pane casements. The ground floor features an impressive single-storey gabled porch, flanked by three-light sunk chamfer mullion windows – the window to the left has 2+2+2 panes, and the one to the right has 6+6+6 panes. A timber-framed pediment above the porch features an unglazed wooden oculus and an ornamental pendant dated 1675. Elaborate carved dentil decoration adorns the bargeboards and door head. The door jambs have reserved panels with enriched decoration, including a disc with arabesques in relief. The inner entrance doorway has an elaborate surround, illustrated by Peter Smith, featuring complex ovolo and ogee moulded jambs and run-out stops with arcaded flats. The ornate inner door has two square panels, each framed by a deep double moulding enclosing fielded panels decorated with a circular pattern of radiating segments. Lozenge-shaped panels with similar decoration are incorporated into the top, middle, and bottom rails. A western elevation displays first-floor casement windows with six 6-pane casements, stone sills, and ground-floor casements of a similar design—to the left and 20th-century double-doors to the right. The north gable has lead aprons to the upper windows. The upper gable has a six-pane window, and the lower gable has three 6+6 pane casements. Additional fenestration on the north gable includes a six-pane window at the top, three 6+6 pane casements below, a single casement to the left on the first floor, a large square centre window with four fixed panes, and a 20th-century bay window to the left and 20th-century double-doors to the right. The interior layout is characteristically double-pile, with a centre staircase flanked by fireplaces which divide the front and back ground floor rooms. A particularly fine dog-leg staircase dated 1675 includes a chamfered newel post with scroll stops, splat balusters, and a carved ornamental band on the outer face of the string.
Local climate
High House receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 65% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 20 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
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