Mynogau-isaf is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 4 November 1999. House.
Mynogau-isaf
- WRENN ID
- fading-jamb-merlin
- 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
- Mynogau-isaf, Dinas Mawddwy, Machynlleth, Mawddwy, Gwynedd
- OS grid reference
- SH 836 166
- Coordinates
- 52.73523, -3.72473
- Source
- Cadw listing
Description
Mynogau-isaf is a single-storey house with an attic, built from local rubble stonework and featuring a whitewashed front. It has a renewed slate roof. The eastern end of the building contains the house part, which has a gable stack and large drip courses. There is a boarded door set within an open-fronted gabled stone porch, flanked by small two-light, two-paned casement windows with stone sills. The attic is illuminated by three rebuilt gabled dormer windows and one rooflight. On the left side, there is a stable door leading to a former farm building, now used as a store, which has one small window. Recently, the rear of the house has been altered to include a shallow brick extension and a wide flat-roofed dormer. The property was not accessible at the time of inspection.
Local climate
Mynogau-isaf 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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