21 Hall Street is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 22 December 1989. House.
21 Hall Street
- WRENN ID
- burning-pilaster-azure
- Grade
- II
- Local Planning Authority
- Denbighshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 22 December 1989
- Type
- House
- Address
- 21 Hall Street, Llangollen
- OS grid reference
- SJ 214 418
- Coordinates
- 52.96867, -3.1716
- Source
- Cadw listing
Description
21 Hall Street is a building dating from around 1800, featuring three storeys and a one-window rendered rubble front. It is part of a pair with Nos 23 and 25. The roof is slate, hipped to the right, with boarded eaves and square red brick chimney stacks located centrally. The building has 8 and 16-pane sash windows, with the first and ground floor windows having cambered heads. The entrance to No 21 includes a six-panel door with a panelled doorcase, while Nos 23 and 25 have modern doors set within a twinned doorcase.
Inside, the building has lightly chamfered main beams and narrow winding timber stairs.
Local climate
21 Hall Street 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 — 6 transactions since 1997
- 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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