Coed y Glyn is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 31 March 1983. House.

Coed y Glyn

WRENN ID
sacred-moulding-dock
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
31 March 1983
Type
House
Address
Coed y Glyn, Caernarfon
OS grid reference
SH 482 624
Coordinates
53.13758, -4.27062
Source
Cadw listing

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

Description

Coed y Glyn is a late-Georgian style house that stands two storeys tall, with an attic and basement, featuring a symmetrical three-bay layout. The exterior is roughcast, topped with a hipped graded slate roof that has wide panelled and bracketed eaves, along with rendered end stacks and an added skylight on the left roof slope. The central doorway consists of double half-lit panelled doors with margin glazing, framed by an architrave with a cornice supported by consoles. The windows are set in moulded architraves; the outer bays on the ground floor have 15-pane hornless sash windows beneath hood moulds, while the upper storey features 12-pane hornless sashes. To the left side, there is a round-headed doorway that leads to a wall screening off the garden, and on the right side, there are boarded garage doors.

The rear elevation, which faces the garden, is also symmetrical and rendered. It has 12-pane horned sashes on the upper storey and 15-pane hornless sash windows on the lower storey, with a central half-lit door topped by an ironwork radial-glazed overlight. The basement contains sash windows on both sides.

The original layout of the house has been preserved, with principal rooms located on the ground floor and the kitchen in the basement. An entrance vestibule leads to a stair hall featuring a full-height open-well stair with a wreathed handrail, plain balusters, and moulded tread ends. The rooms on either side have slate chimneypieces with cast iron fireplaces adorned with decorative tile panels. Panelled doors with thin vertical ribs are retained throughout the house. In the basement, there is a late 19th-century cast iron range made by R Williams of Caernarfon.

Local climate

Coed y Glyn sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% 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 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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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  • 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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