U-shaped Agricultural Range E of Dinas Ddu is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 November 1998. Agricultural range. 1 related planning application.

U-shaped Agricultural Range E of Dinas Ddu

WRENN ID
lesser-bastion-sepia
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
25 November 1998
Type
Agricultural range
Address
U-shaped Agricultural Range E of Dinas Ddu, Porthmadog, Beddgelert, Gwynedd
OS grid reference
SH 594 453
Coordinates
52.98723, -4.09517
Source
Cadw listing

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

Description

This U-shaped agricultural range, built of rubble with slate roofs, is located east of Dinas Ddu. The complex features a primary five-bay hay barn, which is joined on the west by a later byre, and a low two-bay cartshed that projects northward. This arrangement creates a small yard that is open to the north, with rough slate slabs and cobbling. The byre end includes a short section of rubble wall on the left, adjacent to the rear of the hay barn, and a slate-slab partition on the right, which has an opening in the center.

The hay barn has two open bays in the center, a third boarded bay to the right, and a slit vent in the enclosed bay beyond. The open bays are supported by plain square rubble piers but are blocked with rubble at the rear. Both gable ends feature boarded upper loading bays. The byre addition is lower and connects to the left gable of the hay barn, beyond a rubble buttress, and has blocked ventilation slits. Its west gable includes an opening with a boarded loading bay above and a boarded door on the enclosed side. The cartshed has a boarded entrance on the left and a plain cart opening on the right.

Inside the hay barn, the five-bay layout features raking queen strut trusses in the first four bays, while the fifth bay has an internal rubble partition with an open loading bay in the upper section.

Local climate

U-shaped Agricultural Range E of Dinas Ddu sits in one of the wettest parts of the UK, with an average of 1,500 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 98% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 58% of listed buildings. Of these, 16 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
  • 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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