17a and 18-24, Onslow Gardens SW7 is a Grade II listed building in the Kensington and Chelsea local planning authority area, England. First listed on 15 April 1969. Terrace. 29 related planning applications.

17a and 18-24, Onslow Gardens SW7

WRENN ID
grey-quoin-starling
Grade
II
Local Planning Authority
Kensington and Chelsea
Constituency
Kensington and Bayswater MP: Joe Powell (Lab)
Country
England
Date first listed
15 April 1969
Type
Terrace
Address
17a and 18-24, Onslow Gardens SW7, SW7 3AL
OS grid reference
TQ 266 784
Coordinates
51.4908, -0.17703
Source
Historic England listing

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

Description

This is a mid-19th century terrace comprised of numbers 17A and 18 to 24, located on Onslow Gardens in London. The building is constructed of gault brick and stucco, with four storeys over a basement. A mansard roof is covered in slate. Each section features three windows. Doric porticos are present; the first floor has an iron-railed balcony, and a bracketted cornice sits below the top storey. A balustrade runs along the roofline. A single-storeyed projection extends to the rear, facing the garden square.

Local climate

17a and 18-24, Onslow Gardens SW7 sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 94% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 51% of listed buildings. Of these, 15 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 — 23 transactions since 1995
  • Related listed building consents — 29 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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