Dolperis is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 28 May 1999. House. 2 related planning applications.
Dolperis
- WRENN ID
- fallow-cellar-tarn
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 28 May 1999
- Type
- House
- Address
- Dolperis, Llanberis, Caernarfon, LL55 4HA
- OS grid reference
- SH 577 601
- Coordinates
- 53.1197, -4.12676
- Source
- Cadw listing
Description
Dolperis is a farmhouse dating from the 18th century. The house is constructed of regularly coursed and dressed rubble blocks, with the left gable end painted. It has a slate roof with small, integrated rendered end stacks. The full-height gable features bargeboards and carved double-purlin ends that rise from the eaves without a break. The front facade has three windows. The first floor has nine-pane glazing bar sashes, with the centre window in a slightly projecting section. The ground floor windows have twelve panes, with a bracketed, pedimented hood above the window on the left, and a bracketed lean-to hood above the window on the right. A small nine-pane sash window is located in the attic gable. The central entrance has a half-glazed door with margin lights and raised and fielded panels in a plain surround, approached by a short flight of slate steps. The left gable end has two glazing bar sashes to each floor. A two-storey lean-to range is attached to the rear left corner.
Inside, the narrow central staircase hall has a plaster ceiling panel with an enriched cornice and a decorative rose, with a bracketed arch beyond. The staircase behind the hall has a plain moulded handrail, stick balusters, and a radiating, clustered newel post at the foot. A plain moulded cornice is present in the left ground-floor room.
Local climate
Dolperis sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 22 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 8 transactions since 2003
- Related listed building consents — 2 applications
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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