Lly's Gwynedd is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 27 May 1949. House.

Lly's Gwynedd

WRENN ID
ancient-wall-coral
Grade
II
Local Planning Authority
Gwynedd
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
27 May 1949
Type
House
Address
Lly's Gwynedd, Bangor
OS grid reference
SH 581 721
Coordinates
53.22735, -4.12588
Source
Cadw listing

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

Description

Lly's Gwynedd is a three-storey building with a three-window stucco front, dating from the 19th century. It features a slate roof, boarded eaves, and brick chimney stacks on the right end. The building has modern small pane sash windows, with the right-hand windows slightly offset. The central entrance has a segmental head and a six-panel door, which is flanked by fluted colonettes and sidelights, topped with an overall radiating fanlight. The right side of the building is slate hung, while the left side, which was part of the former Berllan Bach, is constructed from rubble and includes 12-pane sash windows. There is a single-storey rubble cross range beyond with an additional 12-pane sash window. The rear is finished in cement render and has extensions and sash windows.

At the time of inspection in Autumn 1987, the building was undergoing major alterations. Inside, the interior retains an openwell staircase with a scrolled handrail end, as well as ceiling roses in the stairwell and entrance hall.

Local climate

Lly's Gwynedd 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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