Cemlyn House is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 19 June 1990. Cottage.

Cemlyn House

WRENN ID
ghost-rampart-burdock
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
19 June 1990
Type
Cottage
Address
Cemlyn House, Dolgellau, Gwynedd
OS grid reference
SH 728 176
Coordinates
52.74157, -3.88507
Source
Cadw listing

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

Description

Cemlyn House is a single-storey cottage that was raised to one and a half storeys at the front in the 19th century, alongside an early 19th-century cottage. The building features rubble masonry that is whitewashed for Cemlyn House, while Cemlyn Cottage is rendered and whitewashed with cement quoins. Both cottages have moderately pitched slate roofs at the front, with Cemlyn Cottage having a pitch that is daubed, and plain eaves with close verges. The original steep pitch is visible at the rear, and all chimneys are made of 19th-century brick.

Timber gablets are present over the loft windows, with three on Cemlyn House and one on the cottage. The buildings have bargeboards and Victorian sash windows. The doorway to the right of centre on Cemlyn House features a six-panel door, with Victorian sash windows flanking it, all under stone lintels. There is a small buttery window to the extreme left, also with a stone lintel.

Cemlyn Cottage has a closed gabled porch, a four-pane fixed window at the front, and an entry on the side, with a Victorian sash window to the right. A cobbled apron at the front of both houses extends to the roadway.

Local climate

Cemlyn House sits in one of the wettest parts of the UK, with an average of 1,340 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 93% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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
  • Sale history — 6 transactions since 1999
  • 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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