Plas Farmhouse (Henblas Farm) is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 14 April 1992. Farmhouse.
Plas Farmhouse (Henblas Farm)
- WRENN ID
- old-wattle-saffron
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 14 April 1992
- Type
- Farmhouse
- Address
- Plas Farmhouse (Henblas Farm), Llanfairfechan
- OS grid reference
- SH 683 748
- Coordinates
- 53.25388, -3.97501
- Source
- Cadw listing
Description
Plas Farmhouse, also known as Henblas Farm, is a two-storey farmhouse with an end chimney, constructed of whitewashed rendered rubble. It features a slate roof and end chimneys, with the right chimney being taller and more robust. The front of the house is almost symmetrical, displaying three windows on the first floor and two on the ground floor, which flank a central doorway. The windows are small pane metal casements, and the doorway is sheltered by a shallow porch made of slate slabs. To the left, there is a single-storey lean-to with two modern windows facing the road to the west and a doorway to the left on the north side. At the rear, irregular stonework indicates a transition between 18th century and 19th century masonry.
In the boundary wall to the left of the house, there is an inscribed stone featuring the initials 'TB', 'BB', and the date '1626', which refer to Thomas Bulkeley and his wife Blanche. Thomas Bulkeley was made a viscount in 1643 and moved to the old Plas, which was demolished in the 19th century, in 1624.
The room to the right of the central entrance has heavy ceiling beams and a large fireplace with a picturesquely curved timber lintel. The other rooms have ceilings with 20th-century roof timbers.
Local climate
Plas Farmhouse (Henblas Farm) sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.
It experiences an average of 38 freeze-thaw cycles a year, more than 73% of listed buildings. Of these, 21 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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