Sort by Most recent sale Address Highest price Highest £ per sqm Largest area Smallest area  Export table	Last sold	Price paid	Floor area	£ per square metre	Type	Paid	m2	£/m2
Flat 12 25, Onslow Square, South Kensington, SW7 3NJ	11 Oct 2024	£560,000	116 sqm	£4,827	Flat (3 bed)
Flat 11 25, Onslow Square, South Kensington, SW7 3NJ	28 Jul 2023	£1,600,000	94 sqm	£17,021	Flat (2 bed)
Flat 3 23, Onslow Square, South Kensington, SW7 3NJ	19 May 2023	£2,800,000 B	124 sqm	£22,580	Flat
Flat 1 17, Onslow Square, South Kensington, SW7 3NJ	05 Aug 2022	£3,600,000 B	116 sqm	£31,034	Flat
Flat 1 1, Onslow Square, South Kensington, SW7 3NJ	22 Mar 2021	£2,300,000			Flat
Flat 1a 25, Onslow Square, South Kensington, SW7 3NJ	27 Oct 2020	£560,000	33 sqm	£16,969	Flat (1 bed)
Flat 2 23, Onslow Square, South Kensington, SW7 3NJ	30 Mar 2017	£2,720,000	117 sqm	£23,247	Flat
Garage, Onslow Square, South Kensington, SW7 3NJ	31 Jan 2017	£40,000,000 B			Other
19, Onslow Square, South Kensington, SW7 3NJ -	24 Mar 2016	£4,400,000 B	145 sqm	£30,344	Flat (3 bed)
Flat 4 5, Onslow Square, South Kensington, SW7 3NJ	18 Dec 2015	£2,850,000	101 sqm	£28,217	Flat
Flat 2 11, Onslow Square, South Kensington, SW7 3NJ	15 Apr 2015	£2,750,000	108 sqm	£25,462	Flat
Flat 10 25, Onslow Square, South Kensington, SW7 3NJ	02 Aug 2013	£2,600,000	134 sqm	£19,402	Flat (3 bed)
Flat 8 25, Onslow Square, South Kensington, SW7 3NJ	13 Mar 2013	£3,600,000	136 sqm	£26,470	Flat (3 bed)
Flat 5 5, Onslow Square, South Kensington, SW7 3NJ	15 Feb 2013	£2,300,000	124 sqm	£18,548	Flat
Flat 3 5, Onslow Square, South Kensington, SW7 3NJ	20 Sep 2012	£518,619	112 sqm	£4,630	Flat
Flat 3 11, Onslow Square, South Kensington, SW7 3NJ	22 Jun 2007	£1,352,000	82 sqm	£16,487	Flat
Flat 4 23, Onslow Square, South Kensington, SW7 3NJ	06 Apr 2006	£950,000			Flat
15, Onslow Square, South Kensington, SW7 3NJ -	02 Dec 2005	£1,815,000			Flat
Flat 5 11, Onslow Square, South Kensington, SW7 3NJ	24 Oct 2005	£700,000	110 sqm	£6,363	Flat
Flat 5 17, Onslow Square, South Kensington, SW7 3NJ	29 Mar 2004	£650,000			Flat
Flat 1 23, Onslow Square, South Kensington, SW7 3NJ	27 Feb 2004	£1,050,000			Flat
Flat 4 17, Onslow Square, South Kensington, SW7 3NJ	26 Aug 2003	£725,000	113 sqm	£6,415	Flat
Flat 6 5, Onslow Square, South Kensington, SW7 3NJ	23 Dec 2002	£1,050,000	106 sqm	£9,905	Flat
Flat 8 11, Onslow Square, South Kensington, SW7 3NJ	25 Nov 2002	£448,213	70 sqm	£6,403	Flat
Flat 1 5, Onslow Square, South Kensington, SW7 3NJ	02 Oct 2000	£300,000			Flat
Flat 5 25, Onslow Square, South Kensington, SW7 3NJ	06 Apr 2000	£735,000			Flat (3 bed)
Flat 7 25, Onslow Square, South Kensington, SW7 3NJ	08 Oct 1998	£129,000			Flat (3 bed)
Flat 2 17, Onslow Square, South Kensington, SW7 3NJ	12 Feb 1997	£500,000	113 sqm	£4,424	Flat
Flat 1 1, South Kensington, SW7 3NJ	15 Dec 1995	£350,000			Flat
Flat 8 5, Onslow Square, South Kensington, SW7 3NJ	16 Jan 1995	£625,000	211 sqm	£2,962	Flat
Flat 12 25, Onslow Square	£560,000 Oct-2024	116	4,827
Flat 11 25, Onslow Square	£1,600,000 Jul-2023	94	17,021
Flat 3 23, Onslow Square	£2,800,000 B May-2023	124	22,580
Flat 1 17, Onslow Square	£3,600,000 B Aug-2022	116	31,034
Flat 1 1, Onslow Square	£2,300,000 Mar-2021
Flat 1a 25, Onslow Square	£560,000 Oct-2020	33	16,969
Flat 2 23, Onslow Square	£2,720,000 Mar-2017	117	23,247
Garage, Onslow Square	£40,000,000 B Jan-2017
19, Onslow Square -	£4,400,000 B Mar-2016	145	30,344
Flat 4 5, Onslow Square	£2,850,000 Dec-2015	101	28,217
Flat 2 11, Onslow Square	£2,750,000 Apr-2015	108	25,462
Flat 10 25, Onslow Square	£2,600,000 Aug-2013	134	19,402
Flat 8 25, Onslow Square	£3,600,000 Mar-2013	136	26,470
Flat 5 5, Onslow Square	£2,300,000 Feb-2013	124	18,548
Flat 3 5, Onslow Square	£518,619 Sep-2012	112	4,630
Flat 3 11, Onslow Square	£1,352,000 Jun-2007	82	16,487
Flat 4 23, Onslow Square	£950,000 Apr-2006
15, Onslow Square -	£1,815,000 Dec-2005
Flat 5 11, Onslow Square	£700,000 Oct-2005	110	6,363
Flat 5 17, Onslow Square	£650,000 Mar-2004
Flat 1 23, Onslow Square	£1,050,000 Feb-2004
Flat 4 17, Onslow Square	£725,000 Aug-2003	113	6,415
Flat 6 5, Onslow Square	£1,050,000 Dec-2002	106	9,905
Flat 8 11, Onslow Square	£448,213 Nov-2002	70	6,403
Flat 1 5, Onslow Square	£300,000 Oct-2000
Flat 5 25, Onslow Square	£735,000 Apr-2000
Flat 7 25, Onslow Square	£129,000 Oct-1998
Flat 2 17, Onslow Square	£500,000 Feb-1997	113	4,424
Flat 1 1,	£350,000 Dec-1995
Flat 8 5, Onslow Square	£625,000 Jan-1995	211	2,962

The data above for Onslow Square can be visualised as a scatter graph, this will show price trends over time.

The average price per square metre (per square foot) in Onslow Square, South Kensington is £17,523 sqm (£1,627 per sq ft), this is calculated from the selling price of the 8 most recent sales.
The majority of homes in South Kensington are now selling for between £14,420 and £21,320 per square metre , find out more in this local analysis of SW7 3 (South Kensington) house prices.
There are roughly 93 homes on Onslow Square, we would have expected about 13 sales each year given that in the UK people sell their homes on average once every 7 years.
In the last 4 years there have been 8 property sales in Onslow Square, averaging roughly 2 home sales per year .
The average size of all the properties on Onslow Square is 104 m2 (1,119 sqft).

*Land Registry 'Category B: Additional Price Paid entry'.