Tregwern is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 22 December 1989. House. 1 related planning application.
Tregwern
- WRENN ID
- grim-merlon-reed
- Grade
- II
- Local Planning Authority
- Denbighshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 22 December 1989
- Type
- House
- Address
- Tregwern, Llangollen, LL20 8RH
- OS grid reference
- SJ 212 419
- Coordinates
- 52.96889, -3.17354
- Source
- Cadw listing
Description
Tregwern is a two-storey building featuring a three-window front made of painted pebbledash and topped with a slate roof. At the left rear, there is a taller hipped cross range. The building has cement render end chimney stacks. The windows are three-light with pointed arch glazing bars, and there is a smaller similar window above the entrance, all equipped with central metal framed casement openings.
The central porch is designed in a cottage orne style, with trellised sides, splayed corners, and a hipped roof. The entrance door is Gothic, featuring two pointed arch lights at the top. The gable ends have chimney breasts, and on the left side, the taller cross range includes a small pane sash window with pointed glazing bars in the upper sash, along with similar style French windows below. To the right, there is a plain casement window and a glazed roof lean-to that extends forward to enclose the forecourt.
At the rear, a rendered rubble wall surrounds the property, where there are two additional chimney stacks.
Local climate
Tregwern receives an average of 920 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 73% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 28 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 3 transactions since 2007
- 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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