Dinas Ddu is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 November 1998. Farmhouse.
Dinas Ddu
- WRENN ID
- wild-facade-elder
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 25 November 1998
- Type
- Farmhouse
- Address
- Dinas Ddu, Porthmadog, Beddgelert, Gwynedd
- OS grid reference
- SH 593 454
- Coordinates
- 52.9876, -4.09641
- Source
- Cadw listing
Description
Dinas Ddu is a two-storey, two-unit farmhouse with an end chimney, built in rubble construction and featuring a lofted stable on the left. The farmhouse section is finished with early 20th-century roughcast and has a continuous slate roof with slab-coped gable parapets and simple chimneys. The entrance to the farmhouse is off-centre, featuring a recessed boarded door. On either side of the entrance, there are four-pane late 19th-century sash windows on both the ground and first floors, each with projecting slate sills. All window openings have raised plaster architraves, typical of the region.
The stable section includes two entrances: the left one is open, while the right has a boarded stable door, both with flush slate lintels. To the left of the stable is a blocked window, and above the left entrance is a small sash window, similar to the others.
Adjoining the right gable end of the house is a lean-to brewhouse block, which is either contemporary or nearly contemporary to the farmhouse. This block features a squat chimney at the front and a central boarded door on the side, with flanking 19th-century windows—one with six fixed panes on the left and a smaller two-pane window on the right. The stable gable has an external stone-stepped access leading to an upper boarded entrance. At the rear, there is a contemporary catslide dairy extension, along with a wheel pit addition to the right, although the waterwheel is missing.
The interiors are plain and date from the early 20th century.
Local climate
Dinas Ddu 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
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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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