15 and 17, St Marys Street is a Grade II listed building in the South Gloucestershire local planning authority area, England. First listed on 8 May 1975. Cottage.
15 and 17, St Marys Street
- WRENN ID
- patient-stronghold-jay
- Grade
- II
- Local Planning Authority
- South Gloucestershire
- Constituency
- Thornbury and Yate MP: Claire Young (LD)
- Country
- England
- Date first listed
- 8 May 1975
- Type
- Cottage
- Address
- 15 and 17, St Marys Street, Thornbury
- OS grid reference
- ST 637 900
- Coordinates
- 51.60796, -2.52472
- Source
- Historic England listing
Description
Nos 15 and 17 on St Mary's Street are early 19th-century cottages constructed from rubble with a pantile roof. They feature a lateral rubble stack and are one storey high with attics accessed through catslide dormers. Each house has two windows; on the first floor, there are 2-light casements, while the ground floor includes a 3-light casement and a modern door, all set beneath a large segmental arch.
Local climate
15 and 17, St Marys Street receives an average of 820 mm of rain a year. This makes it wetter than 51% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 55% of listed buildings.
It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% of listed buildings. Of these, 14 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2016
- 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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