Plas Tirion is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 30 December 2005. House.
Plas Tirion
- WRENN ID
- outer-column-bittern
- Grade
- II
- Local Planning Authority
- Denbighshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 30 December 2005
- Type
- House
- Address
- Plas Tirion, 30 Well Street, Well Street, Ruthin
- OS grid reference
- SJ 125 581
- Coordinates
- 53.11357, -3.30757
- Source
- Cadw listing
Description
Plas Tirion is a symmetrical, three-window house that stands two storeys high with attics. The front of the house is roughcast and painted, topped by a steeply pitched slate roof with tall brick end stacks. Architectural details include raised quoins, a moulded eaves cornice, and a plinth. A central flat-roofed open porch features cast iron openwork piers with an interlace design. The front and sides of the porch are arched, with similar cast iron openwork in the spandrels.
Inside the entrance, there is a panelled door flanked by sidelights, which are adorned with sun-burst stained glass. Narrow fluted pilasters with scrolled caps support a cornice that reads 'Plas Tirion'. Above the entrance on the first floor, there is a large stairlight, which is a four-pane fixed window with coloured margin glazing. Full-height canted bays flank the entrance and have hipped roofs. These bays contain four-pane horned sashes with sidelights on each storey. There is raised decoration between the storeys featuring quatrefoils. The attic storey above the canted bays has two hipped-roofed dormers, each with four-pane wooden windows and sidelights.
Plas Tirion is adjacent to a similar building on the right, which has been significantly altered, and a later building on the left. The rear, which is partly visible, has a large central gable for the attic with a cross-window, possibly lighting the staircase, flanked by late 20th-century flat-roofed dormers with three-light windows. There is also a similar late 20th-century window on the first floor to the right, along with a brick corner stack.
Local climate
Plas Tirion sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 60% of listed buildings.
It experiences an average of 38 freeze-thaw cycles a year, more than 72% 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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