Over the past 31 years, there have been 59 property sales recorded in the SW7 3NJ postcode area. The highest sale price reached £40,000,000, while the most recent sale was for a terraced flat sold in November 2025 for £2,750,000.

The estimated average property value in SW7 3NJ currently stands at £3,299,055, which is approximately 307.5% higher than the city average, indicating a potentially more desirable or in-demand location.

In terms of size, the average price per square metre is approximately £21,459.

Property prices in SW7 3NJ have fallen by 3.3% over the past year , with a total decrease of 2.6% over the past five years , and a long-term drop of 7% over the past decade .

The most common type of property sold in the area is flat, making up around 98% of transactions , followed by other.

Housing in SW7 3NJ is predominantly owner-occupied, with an estimated 61% of homes being lived in by the owners.

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Property Sales

Flat 1, 1, Talbot Road, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£1,918,182
streetscan.co.uk estimate
15 Dec 1995
£350,000

Flat 1, 1 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1195 sq ft
Today
£2,121,530
streetscan.co.uk estimate
22 Mar 2021
£2,300,000
More details

Flat 2, 11 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1163 sq ft
Today
£2,667,816
streetscan.co.uk estimate
20 Nov 2025
£2,750,000
15 Apr 2015
£2,750,000
More details

Flat 3, 11 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 883 sq ft
Today
£2,078,485
streetscan.co.uk estimate
22 Jun 2007
£1,352,000
More details

Flat 5, 11 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1184 sq ft
Today
£1,448,039
streetscan.co.uk estimate
24 Oct 2005
£700,000
22 Oct 1999
£495,000
View +1 more
More details

Flat 8, 11 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 753 sq ft
Today
£1,016,913
streetscan.co.uk estimate
25 Nov 2002
£448,213
22 Oct 1996
£425,000
View +1 more
More details

15 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£3,587,494
streetscan.co.uk estimate
2 Dec 2005
£1,815,000

Flat 1, 17 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1249 sq ft
Today
£2,744,715
streetscan.co.uk estimate
5 Aug 2022
£3,600,000
16 Feb 2018
£3,500,000
View +3 more
More details

Flat 2, 17 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1216 sq ft
Today
£2,384,181
streetscan.co.uk estimate
12 Feb 1997
£500,000
4 Apr 1996
£295,000
More details

Flat 4, 17 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1184 sq ft
Today
£1,748,286
streetscan.co.uk estimate
26 Aug 2003
£725,000
More details

Flat 5, 17 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£1,413,918
streetscan.co.uk estimate
29 Mar 2004
£650,000

19 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£3,762,513
streetscan.co.uk estimate
24 Mar 2016
£4,400,000
27 Oct 2003
£900,000

Flat 1, 23 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£2,272,308
streetscan.co.uk estimate
27 Feb 2004
£1,050,000
29 Apr 1998
£620,000

Flat 2, 23 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1259 sq ft
Today
£2,488,831
streetscan.co.uk estimate
1 Nov 2024
£2,825,000
30 Mar 2017
£2,720,000
More details

Flat 3, 23 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 689 sq ft
Today
£2,349,105
streetscan.co.uk estimate
19 May 2023
£2,800,000
4 Aug 2017
£2,750,000
View +2 more
More details

Flat 4, 23 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£1,805,856
streetscan.co.uk estimate
6 Apr 2006
£950,000
31 Mar 1998
£355,000
10 Apr 1996
£180,000

Flat 10, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1448 sq ft
Today
£2,479,548
streetscan.co.uk estimate
2 Aug 2013
£2,600,000
More details

Flat 11, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1012 sq ft
Today
£1,321,331
streetscan.co.uk estimate
28 Jul 2023
£1,600,000
More details

Flat 12, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1249 sq ft
Today
£487,761
streetscan.co.uk estimate
11 Oct 2024
£560,000
More details

Flat 1A, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 2bed
📐 431 sq ft
Today
£491,821
streetscan.co.uk estimate
27 Oct 2020
£560,000
24 Sep 2001
£259,000
View +2 more
More details

Flat 5, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 2bed
📐 646 sq ft
Today
£2,176,632
streetscan.co.uk estimate
6 Apr 2000
£735,000
More details

Flat 7, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£547,116
streetscan.co.uk estimate
8 Oct 1998
£129,000

Flat 8, 25 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1464 sq ft
Today
£3,798,000
streetscan.co.uk estimate
13 Mar 2013
£3,600,000
25 Jan 2013
£2,000,000
More details

Flat 1, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£897,872
streetscan.co.uk estimate
2 Oct 2000
£300,000
19 Aug 1996
£147,000

Flat 3, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 5bed
📐 1259 sq ft
Today
£555,475
streetscan.co.uk estimate
20 Sep 2012
£518,619
9 Oct 2009
£1,600,000
View +1 more
More details

Flat 4, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1087 sq ft
Today
£2,540,021
streetscan.co.uk estimate
18 Dec 2015
£2,850,000
20 Dec 2012
£2,345,000
View +2 more
More details

Flat 5, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 4bed
📐 1324 sq ft
Today
£2,463,452
streetscan.co.uk estimate
15 Feb 2013
£2,300,000
2 Apr 2004
£800,000
More details

Flat 6, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 3bed
📐 1141 sq ft
Today
£2,461,667
streetscan.co.uk estimate
23 Dec 2002
£1,050,000
More details

Flat 8, 5 Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

🏠 Flat
🛏️ 5bed
📐 2271 sq ft
Today
£3,767,857
streetscan.co.uk estimate
16 Jan 1995
£625,000
More details

Garage Onslow Square, London, Kensington And Chelsea, Greater London, SW7 3NJ

Today
£32,091,255
streetscan.co.uk estimate
31 Jan 2017
£40,000,000

Area Insights

Data Sources

Properties at SW7 3NJ appear fifty-nine times in the Land Registry records, with the latest transaction recorded on 20 Nov 2025. It also has twenty-one Energy Performance Certificates (EPC) entries, the earliest dating back to 8 Dec 2016. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.

Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.