Onslow Square, SW7 — Street Data

3Y Avg Price

£2,170,145

31 sales

Properties

209

Sales / Year

7.8

5-year average

Avg £/sq ft

£2,041

£21,973/m²

Rank in SW7

41st

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 37–46 of 98.

#	Street	3Y Avg	£/sq ft	Sales/yr
37	Ennismore Gardens Mews	£2,323,333	£1,661	1.6
38	Sumner Place	£2,280,000	£1,585	1.0
39	Montpelier Walk	£2,217,500	£1,512	0.8
40	Rutland Mews South	£2,200,000	£1,798	1.2
41	Onslow Square	£2,170,145	£2,041	7.8
42	Manson Mews	£2,160,000	£1,290	1.4
43	Queens Gate	£2,158,333	£1,779	2.0
44	Petersham Mews	£2,130,000	£1,763	0.8
45	Ashburn Place	£2,050,000	£1,499	0.2
46	Kynance Mews	£2,028,333	£1,772	1.2

Property Mix

Type

Terraced1 (0%)

Flat/Maisonette208 (100%)

Tenure

Freehold0 (0%)

Leasehold209 (100%)

EPC Ratings

194 of 209 properties have an EPC record

0 (0%)

1 (1%)

109 (56%)

67 (35%)

16 (8%)

1 (1%)

0 (0%)

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.