Trem-y-mynydd, with associated front walls is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 18 May 1999. Terrace of houses.
Trem-y-mynydd, with associated front walls
- WRENN ID
- low-screen-indigo
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 18 May 1999
- Type
- Terrace of houses
- Address
- Trem-y-mynydd, with associated front walls, Nant Gwrtheyrn, Pwllheli, Pistyll
- OS grid reference
- SH 349 448
- Coordinates
- 52.97583, -4.45927
- Source
- Cadw listing
Description
Trem-y-mynydd is a terrace of 11 houses built from rubble stonework, featuring slate roofs that are hipped at the eastern end and step down with the slope of the ground. The houses are two storeys high and consist of both single and double bays. The smaller houses include a front parlour, a rear dining room, and a kitchen, with stairs leading from the front room to two bedrooms. After 1978, the doors and windows were replaced with framed and battened doors that have overlights, and 12-pane sash windows with stone sills and lintels. Each house has stone stacks on the party walls and a walled front garden, providing access to a walled footpath that leads directly to the manager's house. The houses are now named from west to east as Can Llaw'r bont, Porth-y-Wawr, Clwydfa, Ty-y-Faner, Treforgan, Rhuthun, Aelhaearn (double), and Dwyfor (also double). The interiors were fully modernised in 1979.
Local climate
Trem-y-mynydd, with associated front walls sits in one of the wettest parts of the UK, with an average of 1,710 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 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 2 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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