Rhydlafr Farmhouse & The Old Byre is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 28 January 1963. House, shop.

Rhydlafr Farmhouse & The Old Byre

WRENN ID
silent-screen-owl
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff West MP: Mr Alex Barros-Curtis (Lab)
Country
Wales
Date first listed
28 January 1963
Type
House, shop
Address
Rhydlafr Farmhouse & The Old Byre, St. Fagans
OS grid reference
ST 115 798
Coordinates
51.5109, -3.2761
Source
Cadw listing

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

Description

Rhydlafr Farmhouse and The Old Byre is a two-storey farmhouse built across a slope, featuring ramped lime-washed walls and a pitched slate roof without end chimneys. The building has modern cross-mullion timber windows with stone and slate sills. A part of a four-light stone mullioned window on the ground floor to the right is set into a wider opening under a stone lintel and is covered by lead sheeting. There is a solid pitched roof porch added to the left of the main house.

To the right, there is a lower two-storey extension, formerly the byre, which has a modern rubble-faced outside stair rising diagonally towards the main house. On the left, another two-storey, two-window extension features modern windows. The rear elevation retains a two-storey 17th-century wing with a full-height rubble chimney-stack attached at the outer corner, though it is not open internally. Other early features on the rear include an ogee-headed medieval lancet with cusping set into the upper floor.

Inside, the ground-floor hall runs to the right from the entrance and has early 17th-century chamfered beams with curved fillet stops. It features a lateral stone chimney-piece with double ovolo moulding and a masonry super-arch over the rectangular opening, which includes a bake-oven within the fireplace. The end (south) wall retains a pair of blind segmental masonry arches; the left-hand doorway formerly led into the byre, which retains a pointed dressed masonry arch on the reverse side. There is also said to be a further pointed masonry archway set into the rear wall of the byre extension.

The opposite (north) end wall of the hall has a small square opening below a partly blocked doorway with a voussoir head. The main roof of the house features 19th-century king-post construction but retains older structural timbers. The upper floor bedroom within the main south wall has a pointed and chamfered masonry archway leading towards the upper floor of the byre and also includes a single cusped stone lancet in the rear wall.

Local climate

Rhydlafr Farmhouse & The Old Byre sits in a wetter-than-average part of the UK, with an average of 1,110 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.

It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 8 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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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
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