Glanllyn is a Grade II listed building in the Flintshire local planning authority area, Wales. First listed on 19 August 1991. House.
Glanllyn
- WRENN ID
- third-spindle-barley
- Grade
- II
- Local Planning Authority
- Flintshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 19 August 1991
- Type
- House
- Address
- Glanllyn, Greenfiled, Holywell
- OS grid reference
- SJ 198 772
- Coordinates
- 53.28648, -3.20298
- Source
- Cadw listing
Description
Glanllyn is a 2-storey building with a 2-window front made of rubble, featuring a grouted slate roof and red brick chimney stacks, one located at the center and another at the left end. The building has small-pane sliding sash windows, with stone voussoirs on the right and brick voussoirs on the left; the ground floor windows are camber-headed and there were formerly shutters on the ground floor. There is a central half-glazed door and a blocked doorway to the right-hand cottage. To the left, there is a blacksmith's workshop, and the right end is also made of rubble.
Local climate
Glanllyn receives an average of 930 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 79% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% of listed buildings. Of these, 15 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 — 5 transactions since 2001
- 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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