Gweinion is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 4 November 1999. House.
Gweinion
- WRENN ID
- veiled-vestry-curlew
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 4 November 1999
- Type
- House
- Address
- Gweinion, Mallwyd, Machynlleth, Mawddwy, Gwynedd
- OS grid reference
- SH 879 123
- Coordinates
- 52.69685, -3.6593
- Source
- Cadw listing
Description
Gweinion is a building constructed from local stone rubble, topped with a slate roof. It features a six-panelled door located opposite the original gable end stack, along with two-light casement windows that have small panes. There are three windows on each floor, with the ground floor windows being horizontally proportioned and the upper floor windows being vertically arranged. A cellar is present below the inner room. The building has three stone stacks, each with drip courses. Additionally, the farm range is weatherboarded above stone and has a corrugated iron roof. The property was not accessible at the time of inspection.
Local climate
Gweinion sits in one of the wettest parts of the UK, with an average of 1,240 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.
It experiences an average of 47 freeze-thaw cycles a year, more than 88% of listed buildings. Of these, 26 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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