Oerddwr-Isaf is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 29 May 1968. Cottage.
Oerddwr-Isaf
- WRENN ID
- slow-gateway-laurel
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 29 May 1968
- Type
- Cottage
- Address
- Oerddwr-Isaf, Caernarfon, Beddgelert, Gwynedd
- OS grid reference
- SH 590 454
- Coordinates
- 52.98763, -4.10076
- Source
- Cadw listing
Description
Oerddwr-Isaf is a small single-storey cottage built of rubble with prominent boulder foundations and irregular rubble gable parapets. The cottage has a corrugated iron roof and a tall chimney on the left gable, featuring plain capping. The near-central entrance consists of a deeply-recessed boarded door with a stone lintel, flanked by small square windows that have 4-pane late 19th-century glazing. There is a similar window, which is unglazed, on the right gable end, with a deep inward splay.
Inside, the two-bay layout likely originally included a croglofft. The central collar truss features one principal that is a probably re-used cruck blade, along with the collar. There is a wide fireplace at the chimney end on the left, with a flat oak bressummer, and the interior has 20th-century partitioning.
Local climate
Oerddwr-Isaf sits in one of the wettest parts of the UK, with an average of 1,500 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 58% of listed buildings. Of these, 16 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
Sign in or create a free account to unlock:
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings