Bryngwdion is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 21 July 2000. House.

Bryngwdion

WRENN ID
last-lantern-fen
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
21 July 2000
Type
House
Address
Bryngwdion, Pontllyfni, Caernarfon, Llanllyfni
OS grid reference
SH 444 533
Coordinates
53.05486, -4.32282
Source
Cadw listing

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

Description

Bryngwdion is a 2-storey building from the 19th century, designed in a T-plan layout. It features a symmetrical entrance range with three bays, oriented east-west and facing north, along with an equal-height range extending at right angles to the rear. The exterior is constructed from roughly coursed rubblestone and topped with a slate roof.

The entrance front displays three 4-paned sash windows with slate cills positioned directly below the eaves. To the left of the central entrance, which consists of a 4-panel door with glazed top panels, there is a 6-paned sash window, and to the right, a 4-paned sash window. The right gable end includes a small 4-paned casement window on the first floor and a 20th-century 2-light window on the ground floor.

On the back wall, there is a single casement window with a horizontal glazing bar on the first floor, and to the right of the rear range, a small 4-paned sash window on the ground floor. The east side of the rear range has two sash windows just below the eaves: a 12-paned sash window on the left (unhorned) and a 4-paned sash window on the right. The ground floor features paired 8-paned sash windows to the left and a gabled porch to the right, which has a brick round-headed outer arch and an inner boarded door beneath a narrow overlight. The left gable end has an integral stack and a 20th-century window on the first floor, along with a 4-paned sash window on the ground floor.

There is also a single-storey lean-to addition, possibly a dairy, located on the west side. The interior was not accessible at the time of the survey.

Local climate

Bryngwdion 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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