11 John Street is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 25 April 1997. House.
11 John Street
- WRENN ID
- dreaming-wattle-rain
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 25 April 1997
- Type
- House
- Address
- 11 John Street, Bethesda, Bangor
- OS grid reference
- SH 623 667
- Coordinates
- 53.18015, -4.06167
- Source
- Cadw listing
Description
10 and 11 John Street are two-storey, double-fronted buildings made of whitewashed or colourwashed rubble stone, topped with a slate roof that is hipped at the front and features a very long rendered stack, possibly with eight shafts. The central area has two doors with a blank plaque above on the first floor, and there is one range of plate glass sash windows on each side. The side walls are blank next to the main front but have a one-window range house with an outer door, suggesting that they may have originally been separate houses that are now combined with numbers 10 and 11. The side house has a 4-pane sash window on each floor and an added porch that obscures the door.
Local climate
11 John Street sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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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