No.1 (Sylvan) is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 22 December 1989. House.
No.1 (Sylvan)
- WRENN ID
- patient-spindle-sable
- Grade
- II
- Local Planning Authority
- Denbighshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 22 December 1989
- Type
- House
- Address
- No.1 (Sylvan), Llangollen, LL20 8HL
- OS grid reference
- SJ 215 419
- Coordinates
- 52.96896, -3.16943
- Source
- Cadw listing
Description
No. 1, also known as Sylvan, is a two-storey building with a three-window front, constructed with painted roughcast and topped with a slate roof. It features wide boarded eaves and a central red brick chimney stack, which indicates a lobby-entry plan for No. 1. The front of No. 1 has two windows on the ground floor with almost flush frame 16-pane sashes, while the first floor has small pane casements, likely added in the later 19th century. No. 2 has one window on the ground floor and two on the first floor, with the first floor windows recessed and fitted with louvred shutters. The entrance to No. 1 is marked by an off-centre bracket pedimented doorcase that contains six-panel double doors. No. 2 has a modern splayed bay window and a modern glazed door positioned to the far right. At the rear of No. 2, there is a higher cross range.
Local climate
No.1 (Sylvan) 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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- No EPC on record for this property
- Sale history — 5 transactions since 1996
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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