21 St Mary Street is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 12 November 2002. House/shop.
21 St Mary Street
- WRENN ID
- bitter-oriel-furze
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 12 November 2002
- Type
- House/shop
- Address
- 21 St Mary Street, Chepstow, NP16 5EU
- OS grid reference
- ST 534 939
- Coordinates
- 51.6426, -2.67397
- Source
- Cadw listing
Description
21 St Mary Street is a small Georgian house and shop that is currently used as a surgery. It is attached to buildings on both sides. The walls are scored, rendered, and painted, and the roof is covered with machine tiles. The building has three storeys and a cellar. The front features a single window with 12-pane sash windows set in shallow reveals. The ground floor includes a 20th-century multipane shopfront with a recessed entrance on the left.
Local climate
21 St Mary Street receives an average of 830 mm of rain a year. This makes it wetter than 55% 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 39 freeze-thaw cycles a year, more than 76% of listed buildings. Of these, 18 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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