Former Cowhouse at Bryn Nantllech is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 21 July 1999. Cowhouse.
Former Cowhouse at Bryn Nantllech
- WRENN ID
- solemn-threshold-wren
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 21 July 1999
- Type
- Cowhouse
- Address
- Former Cowhouse at Bryn Nantllech, Bryn Rhydyrarian, Llansannan
- OS grid reference
- SH 944 683
- Coordinates
- 53.20128, -3.58231
- Source
- Cadw listing
Description
The former cowhouse at Bryn Nantllech is a five-bay structure dating from 1793, featuring a catslide roof over a lean-to addition on the southeast end and a small flat-roofed addition on the northwest end. It is constructed of rubble masonry and has a slate roof with a tiled ridge. The entrance elevation faces the yard and the house to the northeast, with three doorways: one on the far left leading to the lean-to addition, one offset to the left, and one to the right. Between these doorways are two modern timber casement windows, with the left window located in a partly blocked doorway. All openings are topped with timber lintels. Additionally, there is a doorway and window in the flat-roofed addition at the northwest corner. A ventilation slit is present in the apex of the left gable return, and there is a pitching door in the apex of the right gable return.
Inside, the roof is exposed and consists of five bays supported by roughly chamfered queen post trusses with angled braces. The truss to the right of the entrance bears the incised date of 1793, and there are slate partitions at the southeast end.
Local climate
Former Cowhouse at Bryn Nantllech sits in a wetter-than-average part of the UK, with an average of 1,010 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 59% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 66% of listed buildings. Of these, 16 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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