Pillar Box is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 19 June 1990. Letter box.

Pillar Box

WRENN ID
under-quoin-thyme
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
19 June 1990
Type
Letter box
Address
Pillar Box, Dolgellau, Gwynedd
OS grid reference
SH 727 178
Coordinates
52.74298, -3.88581
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a circular cast-iron red letter box of standard design. It has a narrow cylinder shape with a fluted rim leading to a shallow domed cap. The door features the GR VI monogram above the words POST OFFICE. It was made by Carron Ironworks.

Local climate

Pillar Box sits in one of the wettest parts of the UK, with an average of 1,340 mm of rain a year. This makes it wetter than 96% 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 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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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