18 and 20, St Thomas Street is a Grade II listed building in the Cornwall local planning authority area, England. House. 1 related planning application.
18 and 20, St Thomas Street
- WRENN ID
- veiled-corbel-plover
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- North Cornwall MP: Ben Maguire (LD)
- Country
- England
- Type
- House
- Address
- 18 and 20, St Thomas Street, Launceston, PL15 8BX
- OS grid reference
- SX 329 848
- Coordinates
- 50.6394, -4.36394
- Source
- Historic England listing
Description
Two suburban houses, built in the early to mid-19th century, are located on St Thomas Road in Launceston. They are constructed of incised stucco with a rag slate roof, featuring slightly projecting eaves, two rendered axial stacks and an end stack on the right-hand side. The houses follow a shallow double-depth plan and have an overall six-window frontage. The windows are original 12-pane hornless sash windows. Number 20 has a 6-panel door on its right-hand side, while Number 18 has a central 20th-century door. The interior has not been inspected. Group value is present due to their contribution to the streetscape.
Local climate
18 and 20, St Thomas Street sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.
It experiences an average of 18 freeze-thaw cycles a year, fewer than 82% of listed buildings. Of these, 8 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 — 5 transactions since 2005
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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