Ochr Heulog is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. Townhouse.
Ochr Heulog
- WRENN ID
- far-bonework-merlin
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 April 1974
- Type
- Townhouse
- Address
- Ochr Heulog, 1 Y Graig (Sunnyside), Tremadog, Porthmadog
- OS grid reference
- SH 560 402
- Coordinates
- 52.93987, -4.14308
- Source
- Cadw listing
Description
Ochr Heulog is a pair of 2-storey cottages located at 1-2 Sunnyside in Tremadog. They are constructed from blocks of quarried stone laid in regular courses, featuring stone lintels, a renewed slate roof, and a stone stack on the right side of each cottage. Cottage No. 1 is double-fronted with a central entrance that has a replacement half-glazed door and overlight. The windows are 2-pane sashes that have been replaced in their original openings, with the upper storey windows being shorter.
Cottage No. 2 has four windows. Its entrance is located to the right of the center and also features a replacement door and overlight. All windows in this cottage are replacements in earlier openings. To the right of the entrance, there is a doorway that has been converted into a window, along with a smaller window at the end. To the left of the entrance, there is a small window, a window in a former doorway, and a blocked small window at the left end. The upper storey of this cottage has four windows.
On the left gable end, which is pebble-dashed, there is an inserted window on the left side in the lower storey. Ochr Heulog is part of a group with 1-2 Y Graig (Sunnyside) in Tremadog. The property has not been inspected.
Local climate
Ochr Heulog sits in one of the wettest parts of the UK, with an average of 1,490 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 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 5 transactions since 1997
- 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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