Plassau is a Grade II listed building in the Flintshire local planning authority area, Wales. First listed on 6 March 1989. Cottage.
Plassau
- WRENN ID
- grey-solder-fen
- Grade
- II
- Local Planning Authority
- Flintshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 6 March 1989
- Type
- Cottage
- Address
- Plassau, Mertyn Downing, Mostyn
- OS grid reference
- SJ 170 781
- Coordinates
- 53.2938, -3.24582
- Source
- Cadw listing
Description
Plassau is a single-storey cottage constructed of rubble stone with a thatched roof. It features two doorways, each flanked by replaced windows. The left-hand doorway and windows are part of the original cottage, while the right-hand doorway is located within a gabled porch. At the back, there is a single-storey link that connects to a parallel two-storey rear wing.
Inside the original cottage, there is a simple cruck truss that rises from about 0.6 meters above the ground to the side. The tie beam has an undulating shape and is ceiled at collar level. The fireplace is fitted with a timber lintel.
Local climate
Plassau receives an average of 930 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 79% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% of listed buildings. Of these, 15 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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