Hammel Range at Plas-gwyn is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 February 1999. Farm building.

Hammel Range at Plas-gwyn

WRENN ID
quiet-chimney-mist
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
8 February 1999
Type
Farm building
Address
Hammel Range at Plas-gwyn, Y Ffor, Pwllheli, Llannor
OS grid reference
SH 395 383
Coordinates
52.9189, -4.38831
Source
Cadw listing

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

Description

Hammel Range at Plas-gwyn is a single-storey building that features an integral fore-yard and is situated at a higher level than the square farmyard at Plas-gwyn. It is accessed by a ramp on the northeast side of the yard. The building is constructed from local stone and has a slate roof. It includes three wide openings with stone lintels and one door. The southeast side of the yard is bordered by a wall made of rounded boulders, which serves as a partial retaining wall for the farmyard. There is a wide entry gate at the top of the approach ramp.

Local climate

Hammel Range at Plas-gwyn sits in one of the wettest parts of the UK, with an average of 1,670 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.

It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 1 follows 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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