Cefn-gwyn Farmhouse is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 9 January 1956. Farmhouse.

Cefn-gwyn Farmhouse

WRENN ID
narrow-threshold-acorn
Grade
II
Local Planning Authority
Monmouthshire
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
9 January 1956
Type
Farmhouse
Address
Cefn-gwyn Farmhouse, Llanddewi Rhydderch, Abergavenny, Gobion Fawr
OS grid reference
SO 357 137
Coordinates
51.81905, -2.93381
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Cefn-gwyn Farmhouse is a farmhouse of the 17th century, with earlier origins, constructed of red sandstone rubble, which has been whitewashed, and featuring a concrete double Roman tile roof with a red brick stack. The building is a three-room, cross-passage plan with two rear wings. It is two storeys high with four windows on the north front.

The north elevation displays two distinct builds and differing roof lines, although the junction between them is not clearly defined to the right of the entrance door. The left section, dated 1637, has two bays: the ground floor features a three-light casement window under an oak lintel, and above it a two-light casement with 3x3 panes. The second bay contains an oak-framed doorway leading to the cross-passage, with a 19th-century four-panel door, and above it a two-light casement with 3x3 panes. This section has a steeply pitched roof with a rebuilt red brick stack on the left gable. The third bay has a two-light casement on each floor; the fourth has a three-light casement below and a two-light casement above, with a wide area of blind walling to the right. This section has a lower roof pitch and ridge line. The gable ends are blind.

The south-facing rear elevation incorporates a small courtyard with wings projecting on either side. The left wing, housing the kitchen, has a modern doorway in its gable end, apparently leading directly to the rear of the fireplace, and is characterized by a large stone and brick stack above. The courtyard face of this wing has a narrow window, and above it a small gable with a two-light casement. A porch with a door leads into the kitchen. The rear wall of the main range has a two-light casement on the upper floor to the left, a window below, and a three-plank studded oak door within a chamfered frame, serving the rear of the cross-passage. The gable stair wing has a 20th-century two-light casement on the ground floor, a blocked window in the gable, and a raking buttress to the corner with a small two-light casement to the first and second floors. The rear wall of the parlour wing exhibits a modern two-light casement under a wider oak lintel below, and an earlier 17th-century four-light window with ovolo oak mullions above, with two lines of four pigeon holes to the right.

The interior, not inspected during the most recent survey, previously revealed a Tudor doorhead, stud and panel partition, beams with stop-chamfered spine beams with run-out stops, and an angular Tudor fireplace in a bedroom. Historical records, including those by Fox and Raglan, show a plan indicating a post-and-panel partition between the cross-passage and parlour, with the doorway’s date inscribed as 1637. The joinery incorporates roll mouldings and flat-and-scroll stops. The rear wing includes a staircase in short, straight flights around a central core. Mortices for the original partition are still visible in the original part of the house. Newman records further details in the older part, including a mural stair, stone flooring below timber above, and a large fireplace with an oak lintel. An upper-floor post-and-panel partition also survives. Fox and Raglan note "Wern-hir" stops on the ceiling beams.

Local climate

Cefn-gwyn Farmhouse 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.

More on this building

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