Plas Tirion is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 5 January 1996. House. 1 related planning application.
Plas Tirion
- WRENN ID
- narrow-passage-torch
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 5 January 1996
- Type
- House
- Address
- Plas Tirion, Top Llan Road, Llansanffraid Glan Conwy, LL28 5ND
- OS grid reference
- SH 803 758
- Coordinates
- 53.2663, -3.79487
- Source
- Cadw listing
Description
Plas Tirion is a small late Georgian house, believed to have been built in 1812 for a local sea captain. The building features rubble construction with scribed rendered walls, plain end chimneys, and a slate roof. It has a symmetrical two-storey, three-bay front with slightly-recessed, 12-pane sash windows in the outer bays of both floors, with the ground floor windows having cambered heads. An open central porch is supported by cast iron acanthus columns and leads to a canted bay above, which has a moulded base and a central window similar to the others, flanked by 8-pane sections and topped with a flat roof. The front door is a contemporary six-panelled design with an arched fanlight and crude, flanking engaged Tuscan columns.
The ground slopes away to the rear, raising the ground floor and creating a basement storey underneath. Additional 12-and 16-pane sash windows are present, along with plain Victorian sashes on the two main floors. On the left, steel-framed mid-20th century French doors provide access to a raised terrace. To the left of the main front, there is an early 20th-century storeyed porch extension with a hipped roof.
Inside, the hall and former kitchen (on the left) have slate flagged floors. A single-flight stick baluster stair leads to a similar galleried landing, and there is a plain cornice in the hall. The former kitchen features a tall fireplace with a bracketed mantelshelf and adjoining four-door panelled cupboards. Original six-panelled doors lead to the main rooms, including the parlour, which has a simple reeded plaster cornice, panelled reveals, and shutters.
Local climate
Plas Tirion sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 76% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% of listed buildings. Of these, 18 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
- Sale history — 1 transaction since 2019
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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