Milepost is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 4 November 1999. Milepost. 1 related planning application.

Milepost

WRENN ID
spare-chamber-saffron
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
4 November 1999
Type
Milepost
Address
Milepost, Dinas Mawddwy, Mawddwy, Gwynedd, SY20 9LX
OS grid reference
SH 848 154
Coordinates
52.72473, -3.70651
Source
Cadw listing

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

Description

The milepost is made of cast iron and is painted white with a black base. It has a triangular shape that is open at the back and wider at the top, featuring a sloping front gusset. The raised and painted lettering on the left side reads "DINAS / MAWDDWY / 1" and on the right side it reads "DOLGELLEY / 9".

Local climate

Milepost sits in one of the wettest parts of the UK, with an average of 1,240 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 47 freeze-thaw cycles a year, more than 88% of listed buildings. Of these, 26 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.
  • No sale records on file
  • Related listed building consents — 1 application
  • 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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  2. Dolobran Grade II 878 m
  3. Pandy at Dolobran Grade II 887 m
  4. Rhydyfelin, formerly known as 1 Wyle Cop Grade II 1.2 km
  5. Braich-melyn Grade II 1.2 km
  6. Pont Dol-y-Bont Grade II 1.2 km
  7. Gwynfa Grade II 1.6 km
  8. Isfryn Grade II 1.6 km
  9. 3 Mawddwy Terrace Grade II 1.6 km
  10. Llys Gwalia Grade II 1.7 km