20, Conduit Street W1 is a Grade II listed building in the Westminster local planning authority area, England. First listed on 1 December 1987. Commercial premises. 6 related planning applications.
20, Conduit Street W1
- WRENN ID
- tilted-mullion-onyx
- Grade
- II
- Local Planning Authority
- Westminster
- Constituency
- Cities of London and Westminster MP: Rachel Blake (Lab)
- Country
- England
- Date first listed
- 1 December 1987
- Type
- Commercial premises
- Address
- 20, Conduit Street W1, City of Westminster, W1S 2XN
- OS grid reference
- TQ 290 808
- Coordinates
- 51.51215, -0.14233
- Source
- Historic England listing
Description
No. 20 Conduit Street is a commercial building dating from around 1900, designed by Treadwell and Martin. It is constructed of stone and stands four storeys high, featuring dormers. The facade has one main bay that is seven lights wide. The ground floor has a 20th-century shopfront. At the top, there is a Dutch gable that spans the entire width, adorned with moulded coping and side scrolls. A central oriel window extends from the first to the third storey, with carved bands at the corners and between the storeys. The windows are mullioned and transomed, and there are carved full-height pilaster strips along the edges of the facade. A thermal window is present in the gable, and there is a tall chimney.
Local climate
20, Conduit Street W1 sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 95% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.
It experiences an average of 35 freeze-thaw cycles a year, more than 57% of listed buildings. Of these, 16 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 2023
- Related listed building consents — 6 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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