Tan-y-Bryn is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 29 May 1968. House.
Tan-y-Bryn
- WRENN ID
- north-eave-summer
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 29 May 1968
- Type
- House
- Address
- Tan-y-Bryn, Penygroes, Caernarfon, Llanllyfni
- OS grid reference
- SH 466 523
- Coordinates
- 53.04663, -4.28975
- Source
- Cadw listing
Description
Tan-y-Bryn is a 2-storey building with an L-shaped plan, dating from the late 20th century. The main rectangular range runs roughly from northwest to southeast, with a shorter 2-storey section at the back. It is built from limewashed, roughly coursed rubblestone sitting on a boulder plinth, and has a graded slate roof.
The front wall of the main range features two 20th-century windows in earlier openings on each floor, which are grouped towards the center, with an entrance to the left. There is a square integral end stack on the left that partly projects and rests on four roughly rounded corbels, and a rebuilt integral end stack on the right.
The building has undergone significant alterations in the late 20th century, including the addition of a new staircase. However, the left ground-floor room still has a large open fireplace with a chamfered beam and exposed joists that rest on a cross beam. The position of a former winder staircase is located next to the fireplace.
Local climate
Tan-y-Bryn sits in one of the wettest parts of the UK, with an average of 1,610 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 11 freeze-thaw cycles a year, fewer than 89% of listed buildings. Of these, 4 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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