Outbuildings at Cochwillan is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 9 March 2000. Outbuilding.

Outbuildings at Cochwillan

WRENN ID
hallowed-ember-jet
Grade
II
Local Planning Authority
Gwynedd
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
9 March 2000
Type
Outbuilding
Address
Outbuildings at Cochwillan, Llanllechid
OS grid reference
SH 606 694
Coordinates
53.20341, -4.08741
Source
Cadw listing

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

Description

The outbuildings at Cochwillan are an L-shaped range of single-storey structures, built in the 19th century. The south range includes a cart shelter on the east side, while the west range serves as stables. The buildings are constructed of roughly coursed rubblestone, with slightly different masonry in the northern part of the west range, and feature slate roofs that are hipped at both ends of the south range.

The south range has a 2-bay cart shelter on the left, and on the right, there is a boarded door flanked by ventilator windows with slate cills, along with a brick ridge stack. The west range has a roughly central boarded door with a ventilator window to the right, and a single-storey lean-to addition at the rear. To the right of this addition, there are two ventilator windows.

Inside the northern part of the west range, there are four bays supported by three trusses, which include substantial raking struts connecting the tie beams to the principal rafters. The central truss has been reconfigured with a replacement tie at collar level and features double purlins. The original extent of the building to the south is marked by a stone cross wall, beyond which there is an A-frame truss leading to the 2-bay infill section that connects with the south range. This section includes a king-post truss between the cart bays. The west range also contains well-preserved slate and timber stall partitions.

Local climate

Outbuildings at Cochwillan 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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Nearby listed buildings

  1. Cochwillan Grade I 23 m
  2. Pigsties at Bwthyn Cochwillan Grade II 35 m
  3. Bwthyn Cochwillan Grade II 39 m
  4. Slate Fencing at Bwthyn Cochwillan Grade II 59 m
  5. Fferm Cochwillan Grade II 69 m
  6. Cowhouses/Cart Shelter at Fferm Cochwillan Grade II 88 m
  7. Pigsties/Pig Kitchen at Fferm Cochwillan Grade II 94 m
  8. Halfway Bridge (partly in Llandygai community) Grade II 449 m
  9. Weigh House at Lon-Isaf Gate Grade II 471 m
  10. Walling and Depots on east side of former turnpike road (old A 5) Grade II 474 m