Outbuilding behind 4 Tros yr Afon is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 13 July 2005. Outbuilding.

Outbuilding behind 4 Tros yr Afon

WRENN ID
lunar-soffit-ridge
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
13 July 2005
Type
Outbuilding
Address
Outbuilding behind 4 Tros yr Afon, Beaumaris
OS grid reference
SH 600 758
Coordinates
53.26106, -4.09924
Source
Cadw listing

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

Description

This is an outbuilding located behind 4 Tros yr Afon. It is constructed from whitened rubble stone and features a monopitched slate roof. On the left side, there is a boarded door and a small-pane horizontal-sliding sash window, although the left-hand sash is missing and boarded over. To the center and right, there are two pairs of boarded doors, each situated under timber lintels. Further to the right, there is a lower extension that has been brought forward, made of rubble stone with a monopitched asbestos-cement roof. On the left side of this extension, there is another boarded door, followed by a small-pane horizontal-sliding sash window located beneath the eaves, and a blocked door. The building extends further to the rear of No 3.

Local climate

Outbuilding behind 4 Tros yr Afon sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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
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  • 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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Nearby listed buildings

  1. 4 Tros yr Afon Grade II 16 m
  2. 3 Tros yr Afon Grade II 22 m
  3. 2 Tros yr Afon Grade II 31 m
  4. 1 Tros yr Afon Grade II 35 m
  5. Gate posts and gate at entrance to 3 Tros yr Afon Grade II 46 m
  6. Bridge over Mill Lane on former drive to Baron Hill Grade II 125 m
  7. Bryn Canol Grade II 126 m
  8. Porth Hir Grade II 127 m
  9. The Bryn Grade II 130 m
  10. Plas Maelog Grade II 143 m