Gorphwysfa is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 July 1995. House. 1 related planning application.
Gorphwysfa
- WRENN ID
- white-postern-starling
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 25 July 1995
- Type
- House
- Address
- Gorphwysfa, Mallwyd, Machynlleth, Mawddwy, Gwynedd, SY20 9HJ
- OS grid reference
- SH 863 123
- Coordinates
- 52.69725, -3.68389
- Source
- Cadw listing
Description
Gorphwysfa is a two-storey building dating from an unspecified period. It is located on boulder foundations and constructed of stone that has been whitewashed. The roof is made of old slate with blue ridge tiles. The building has three bays, featuring a modern part-glazed replacement door in the center bay and two uPVC replacement windows that mimic the original four-pane windows. There is a stack at the eastern gable end, along with two small roof lights. A large modern window is present in the gable end, which has a large whitewashed timber lintel, and there is a small window in the attic. At the rear, there is a lateral chimney.
Inside, the building has been modernized but still retains part of the timber-framed partition that separates the cottages and a section at the rear.
Local climate
Gorphwysfa 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
- Sale history — 2 transactions since 1998
- Related listed building consents — 1 application
- 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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