Mount Hazel is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 30 September 1999. House.

Mount Hazel

WRENN ID
spare-floor-equinox
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
30 September 1999
Type
House
Address
Mount Hazel, Ty'N-Lon, Caernarfon, Llandwrog
OS grid reference
SH 461 568
Coordinates
53.08697, -4.29827
Source
Cadw listing

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

Description

Mount Hazel is a two-storey building with an attic, constructed from pebbledashed rubblestone and topped with a large slate roof featuring coped verges and integral end stacks. The original house has a three-bay front with a three-window range, and there is a single-storey block extending to the right. All the windows in the main building are 16-paned sashes with slate cills on both the ground and first floors, while the outer windows on the first floor are unhorned. The early 20th-century dormers are gabled in the center and hipped on the outer bays, breaking the eaves and featuring horned 20-paned sashes with slate cills.

The central entrance is adorned with an Edwardian porch that has plain Doric pilasters, glazed sides, a gable, and a roof. The entrance includes half-glazed panelled inner and outer doors. To the right, there is a lower two-storey addition built in 1904, which has three 12-paned sashes on each floor, all horned and with slate cills, as well as an integral end stack. Further to the right, there is a single-storey addition that features similar sashes in the center and right, along with a small window to the left and an integral end stack with a tall stepped shaft.

Inside, the central hall contains a dog-leg staircase with stick balusters, a moulded handrail, and a cut string. A room at the rear on the left showcases good Edwardian panelling, and there are panelled window shutters throughout the building.

Local climate

Mount Hazel 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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