Afallon, Marine Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 26 September 2005. House.
Afallon, Marine Terrace
- WRENN ID
- spare-portal-root
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 26 September 2005
- Type
- House
- Address
- Afallon, Marine Terrace, 5 Ffordd Garth (Garth Road), Porthmadog
- OS grid reference
- SH 568 382
- Coordinates
- 52.92242, -4.13099
- Source
- Cadw listing
Description
Afallon, located on Marine Terrace, is a symmetrical two-storey house with three windows, built in the 19th century. The exterior features whitened roughcast with rusticated quoin strips and panelled, pedimented architraves. It has a slate roof that includes added skylights and a shared roughcast chimney stack on the right side.
The central entrance is highlighted by a porch supported by paired fluted columns and topped with a moulded cornice. The porch leads to a half-glazed panel door that incorporates coloured-glass panels and an overlight. The sides of the porch have been filled in with wooden latticework.
On the lower storey, the windows are distinctive three-light casements with small-pane glazing above transoms, while the upper storey features similar two-light windows. The property has not been inspected.
Local climate
Afallon, Marine Terrace 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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- 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.
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