3Y Avg Price
£2,135,328
29 sales
Properties
209
Sales / Year
7.8
5-year average
Avg £/sq ft
£2,035
£21,909/m²
Rank in SW7
44th
of 98 streets
Last Sale
£3,700,000
Jun 2026
Price History
Every recorded sale on this street, coloured by property type.
Last 10 Sales
403 total recorded
FLAT 4, 81 Onslow Square
Flat/Maisonette
£3,700,000
Jun 2026
FLAT 4, 51 Onslow Square
Flat/Maisonette
£2,425,000
Feb 2026
FLAT 8, 20 Onslow Square
Flat/Maisonette
£2,280,000
Dec 2025
FLAT 2, 11 Onslow Square
Flat/Maisonette
£2,750,000
Nov 2025
FLAT 11, MALVERN COURT Onslow Square
Flat/Maisonette
£1,725,000
Oct 2025
FLAT 10, 81 Onslow Square
Flat/Maisonette
£2,500,000
Aug 2025
FLAT 9, 14 Onslow Square
Flat/Maisonette
£2,200,000
Jun 2025
FLAT 31, MALVERN COURT Onslow Square
Flat/Maisonette
£1,850,000
Apr 2025
FLAT 21, MALVERN COURT Onslow Square
Flat/Maisonette
£1,490,000
Mar 2025
FLAT 16, 27 Onslow Square
Flat/Maisonette
£275,000
Nov 2024
Street Rankings — SW7
Streets ranked by 3-year average sale price. Showing positions 40–49 of 98.
| # | Street | 3Y Avg |
|---|---|---|
| 40 | Montpelier Walk | £2,217,500 |
| 41 | Rutland Mews South | £2,200,000 |
| 42 | Manson Mews | £2,160,000 |
| 43 | Queens Gate | £2,158,333 |
| 44 | Onslow Square | £2,135,328 |
| 45 | Petersham Mews | £2,130,000 |
| 46 | Ashburn Place | £2,050,000 |
| 47 | Kynance Mews | £2,028,333 |
| 48 | Lancelot Place | £2,000,000 |
| 49 | Gloucester Road | £1,978,524 |
Property Mix
Type
Tenure
EPC Ratings
194 of 209 properties have an EPC record
Avg floor area: 1,302 sq ft (121 m²)
District Context — SW7
SW7 covers South Kensington and the surrounding area in central London, positioned in the heart of the capital's most prestigious neighbourhood. It is characterised by grand Victorian and Edwardian mansion blocks, world-class museums, and cultural institutions, drawing affluent professionals and international residents.
Average Property Price - SW7
£1,517,519
100
National percentile
12 month avg at 31 Aug 2026
Average Net Household Income - SW7
£76,239
100
National percentile
2023 census data
10-Year Annualised Price Growth - SW7
-4.9%
1
National percentile
Estimate at 31 Aug 2026
10-Year Annualised Rent Growth - SW
3.2%
8
National percentile
Estimate at 31 Aug 2026