15, St Mary's Street is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 8 January 1971. Town house, shop. 5 related planning applications.

15, St Mary's Street

WRENN ID
old-buttress-dawn
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
8 January 1971
Type
Town house, shop
Address
15, St Mary's Street, Truro, TR1 2AF
OS grid reference
SW 827 448
Coordinates
50.26385, -5.05031
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

No. 15 St Mary's Street is a town house that has been converted into a shop, dating from the early 19th century. The front features render that replaces the original stucco on studwork, and it has a hipped asbestos slate roof that is concealed behind a parapet. The building has a double-depth plan with a service wing at the rear and stands three storeys tall with a two-window range. The windows are 12-pane horned sashes set within moulded architraves, and there is a stuccoed plinth. To the right, a round-arched doorway is flanked by slender engaged fluted columns, with pilasters, consoles, and an open pediment, along with panelled reveals and a 20th-century door. On the left side, there is a simple 20th-century four-light shop window with flat pilasters and a fascia that features a moulded cornice. The interior has not been inspected but is likely to be of interest.

Local climate

15, St Mary's Street receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 6 freeze-thaw cycles a year, fewer than 96% of listed buildings. Of these, 2 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 — 3 transactions since 2006
  • Related listed building consents — 5 applications
  • 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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