Carnachenwen is a Grade II listed building in the Pembrokeshire Coast National Park local planning authority area, Wales. First listed on 29 April 1993. Farmhouse.

Carnachenwen

WRENN ID
idle-forge-burdock
Grade
II
Local Planning Authority
Pembrokeshire Coast National Park
Constituency
Ceredigion Preseli MP: Ben Lake (PC)
Country
Wales
Date first listed
29 April 1993
Type
Farmhouse
Address
Carnachenwen, Mathry
OS grid reference
SM 876 330
Coordinates
51.95484, -5.09212
Source
Cadw listing

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

Description

Carnachenwen is an 18th-century farmhouse, dated 1743 and 1776, with possible earlier fabric. The house is constructed of rubble stone, formerly rendered, with a renewed slate roof, a stone stack at the west end, and a red brick stack to the east. It comprises a two-storey, long front range with a projecting gabled porch, and a two-window range on each side. The left side formerly had a long lean-to, but the roof has been lowered, except at the left end to accommodate two 12-pane sash windows to the upper floor. The left end has a corner datestone of 1743, and a single door leading into a remodelled smoke chamber. A lean-to to the right has two 12-pane sashes. The main entrance was originally in the position of the right-hand sash; the porch had a window at its southern end and was used as an 'ystafell fwrdd', providing space with a table for farm workers. To the right of the porch, there are two original 12-pane sashes above and two below, with the left-hand ones not aligned. Contemporary lintels have replaced the original brick arches. Loft lights are visible in the end gables, and there is a wooden-shuttered light on the first floor of the west end.

At the rear of the main house, there is a 12-pane sash window on each floor to the right, and a 1743 datestone in the corner. To the left, there is a lean-to that was raised in a renovation to above eaves level.

A rear, northeast wing bears the datestone 'W & M Rogers 1776'. It features a door on the west side and a 12-pane sash window below, with brick heads. There is a renewed stack at the north end. The rear east wall has a mid-19th century margin-glazed stair-light to the left, and a narrow 8-pane sash to the right. A renewed 12-pane sash is on the ground floor.

Attached to the east end is a row of outbuildings with corrugated iron roofs. The first has three doors, one framed in 19th-century brick and one with double doors; a fourth door is on the north (rear) side, accompanied by a 1754 datestone. The second building has a higher roof and access from the rear.

The building has undergone much renewal, but the west end retains a massive inglenook fireplace with an elm lintel, along with a bread oven and a copper. A very unusual, attached smoke chamber with a conical, corbelled roof is located to the south. The present two-room ground floor simplifies the original plan. Unmoulded oak beams are present in the west room. The long east room (within the main wing) has a chimney at the east end. Features include a small wall cupboard and two wall recesses on the north wall, and a long wall cupboard on the west wall. Contemporary joists are also present. The roof structure includes nine collar trusses, with four older ones in oak and two pine trusses that reuse oak collars. The rear wing incorporates a staircase with a thick rail featuring arch-headed fielded panels and cupboards.

Local climate

Carnachenwen sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 84% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows 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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Nearby listed buildings

  1. Small Outbuildings to SW.of Carnachenwen Farmhouse Grade II 13 m
  2. Pigsties at Carnachenwen Grade II 16 m
  3. Outbuilding to NW.of House at Carnachenwen Grade II 18 m
  4. Small Outbuildings to SW.of Carnachenwen Farmhouse Grade II 19 m
  5. Long Barn to S.of Carnachenwen Grade II 25 m
  6. Cartshed at Entrance to S.of Carnachenwen Grade II 48 m
  7. High Roost Grade II 961 m
  8. Outbuilding to E.of High Roost Grade II 965 m
  9. Telephone Call-box at the General Stores Grade II 1.0 km
  10. Church of the Holy Martyrs Grade II 1.0 km