Old Customs Post is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 26 March 1973. Customs post.
Old Customs Post
- WRENN ID
- ruined-mantel-jackdaw
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 26 March 1973
- Type
- Customs post
- Address
- Old Customs Post, Porth Dafarch, Trearddur
- OS grid reference
- SH 232 799
- Coordinates
- 53.28709, -4.6531
- Source
- Cadw listing
Description
The Old Customs Post is a square, single-storey building that is built against a cliff face on one side, while the other three sides are constructed of local rubble. It has a flat cement roof. The openings feature segmental-arched stone heads, including a single entrance doorway on the seaward-facing side and a single window on the right return. As of June 1998, the building is in poor condition. Inside, it has a barrel vaulted ceiling made of red brick.
Local climate
Old Customs Post sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 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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