The White Barn is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. House. 6 related planning applications.

The White Barn

WRENN ID
dusk-column-amber
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
25 February 2005
Type
House
Address
The White Barn, Tan-Y-Bwlch, Maentwrog, Gwynedd, LL41 3YU
OS grid reference
SH 658 406
Coordinates
52.94682, -3.99828
Source
Cadw listing

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

Description

The White Barn is a single-story, six-bay building dating from the 18th century. It is constructed of roughly coursed mortared rubble masonry. The roof is slate, laid in a decorative pattern, with broadly advanced feathered eaves supported by monolithic stone piers. Rectangular stone stacks with a dripcourse and capping are also visible. The front elevation features glazed double doors to the left and two-light casement windows with shutters. The rear elevation mirrors this detailing. A modern, flat-roofed addition is present at the right (southwest) gable, and a timber-walled addition extends under the eaves to the rear. The interior was not inspected during the survey conducted in June/July 2003.

Local climate

The White Barn sits in one of the wettest parts of the UK, with an average of 1,450 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 96% of listed buildings.

It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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.
  • Sale history — 5 transactions since 1997
  • Related listed building consents — 6 applications
  • 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. Yr Hen Ysgubor aka Barton Lodge Grade II 72 m
  2. Crochendy Twrog Grade II 83 m
  3. Ty'r Felin Grade II 103 m
  4. Former kiln house at Tan-y-bwlch mill Grade II 128 m
  5. Plas Tan-y-Bwlch including attached terrace walls to east and west Grade II* 287 m
  6. Folly at Tan-y-Bwlch Grade II 296 m
  7. Former servant's quarters to rear of Plas Tan-y-bwlch Grade II 309 m
  8. Milestone at the Oakeley Arms Grade II 324 m
  9. The Oakeley Arms Hotel Grade II 329 m
  10. Garden Terrace to S and E of Plas Tan y bwlch Grade II 335 m