21 and 21a, Windsor Street is a Grade II listed building in the Hillingdon local planning authority area, England. A C17 House.
21 and 21a, Windsor Street
- WRENN ID
- iron-pavement-tarn
- Grade
- II
- Local Planning Authority
- Hillingdon
- Constituency
- Uxbridge and South Ruislip MP: Danny Beales (Lab)
- Country
- England
- Type
- House
- OS grid reference
- TQ 054 840
- Coordinates
- 51.54508, -0.48056
- Source
- Historic England listing
Description
Nos 21 and 21A on Windsor Street are likely a 17th-century timber-framed house with two storeys and four windows. The high-pitched roof has been replaced with modern pantiles. Number 21A is finished in painted brick, while the rest of the building is rendered. The windows include 19th-century sashes and casements, and there are ground floor shops from the 19th and early 20th centuries. A carriageway is located to the right. This building is part of a group that includes Nos 10 to 23 consecutively, along with Nos 16A, 17A, and 21A.
Local climate
21 and 21a, Windsor Street sits in a drier-than-average part of the UK, with an average of 700 mm of rain a year. This makes it drier than 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.
It experiences an average of 29 freeze-thaw cycles a year, fewer than 68% of listed buildings. Of these, 12 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.
- 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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Nearby listed buildings
- 2 K6 Telephone Kiosks Outside Post Office, South End of Windsor Street
- 39 and 40, Windsor Street
- 16, 16a, 17 and 17a, Windsor Street
- 41 and 42, Windsor Street
- 15, Windsor Street
- 13 and 14, Windsor Street
- Entrance Gateway to Former Graveyard
- Uxbridge War Memorial
- 50, Windsor Street
- 51, 52, 52a and 53, Windsor Street