Plas Penrhyn is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 19 October 1998. Villa.
Plas Penrhyn
- WRENN ID
- stranded-trefoil-thunder
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 19 October 1998
- Type
- Villa
- Address
- Plas Penrhyn, Rhosyr
- OS grid reference
- SH 455 635
- Coordinates
- 53.14688, -4.31125
- Source
- Cadw listing
Description
Plas Penrhyn is a small country villa built in a simplified classical style. It is two stories high and features a three-window range, with a two-story wing set at right angles to the rear and a single-storey central porch at the front. The villa has stucco elevations and a hipped slate roof, which includes tall rectangular rendered end stacks with a stressed drip course and cornice.
The entrance elevation is symmetrically designed with a three-window range, a central porch, and slightly recessed flanking bays. The windows are slightly recessed hornless sashes, with 12-pane windows on the first floor and 6 over 2-pane windows on the ground floor. The porch has the entrance located on the right side and includes a single round-headed light at the front, with slightly stressed angles and a moulded cornice beneath a shallow parapet.
The side elevations feature windows at the rear, with 12-pane sash windows on the first floor and a 19-pane light on the ground floor of the left-hand return, where two panes are side-hung casements. The rear wing has modern windows.
Local climate
Plas Penrhyn sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.
It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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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