Sort by Most recent sale Address Highest price Highest £ per sqm Largest area Smallest area	Last sold	Price paid	Floor area (m²) Floor area (sq ft)	£ per m² £ per sq ft	Type	Sold	m² sq ft	£/m² £/sq ft
Flat 2 23, Onslow Square, South Kensington, SW7 3NJ	01 Nov 2024	£2,825,000	117 m² 1259 sqft	£24,145 £2,243	Flat
Flat 12 25, Onslow Square, South Kensington, SW7 3NJ	11 Oct 2024	£560,000	116 m² 1248 sqft	£4,827 £448	Flat (3 bed)
Flat 11 25, Onslow Square, South Kensington, SW7 3NJ	28 Jul 2023	£1,600,000	94 m² 1011 sqft	£17,021 £1,581	Flat (2 bed)
Flat 3 23, Onslow Square, South Kensington, SW7 3NJ	19 May 2023	£2,800,000 B	124 m² 1334 sqft	£22,580 £2,097	Flat
Flat 1 17, Onslow Square, South Kensington, SW7 3NJ	05 Aug 2022	£3,600,000 B	116 m² 1248 sqft	£31,034 £2,883	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 m² 355 sqft	£16,969 £1,576	Flat (1 bed)
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 m² 1560 sqft	£30,344 £2,819	Flat (3 bed)
Flat 4 5, Onslow Square, South Kensington, SW7 3NJ	18 Dec 2015	£2,850,000	101 m² 1087 sqft	£28,217 £2,621	Flat
Flat 2 11, Onslow Square, South Kensington, SW7 3NJ	15 Apr 2015	£2,750,000	108 m² 1162 sqft	£25,462 £2,365	Flat
Flat 10 25, Onslow Square, South Kensington, SW7 3NJ	02 Aug 2013	£2,600,000	134 m² 1442 sqft	£19,402 £1,802	Flat (3 bed)
Flat 8 25, Onslow Square, South Kensington, SW7 3NJ	13 Mar 2013	£3,600,000	136 m² 1463 sqft	£26,470 £2,459	Flat (3 bed)
Flat 5 5, Onslow Square, South Kensington, SW7 3NJ	15 Feb 2013	£2,300,000	124 m² 1334 sqft	£18,548 £1,723	Flat
Flat 3 5, Onslow Square, South Kensington, SW7 3NJ	20 Sep 2012	£518,619	112 m² 1205 sqft	£4,630 £430	Flat
Flat 3 11, Onslow Square, South Kensington, SW7 3NJ	22 Jun 2007	£1,352,000	82 m² 882 sqft	£16,487 £1,531	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 m² 1184 sqft	£6,363 £591	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 m² 1216 sqft	£6,415 £595	Flat
Flat 6 5, Onslow Square, South Kensington, SW7 3NJ	23 Dec 2002	£1,050,000	106 m² 1140 sqft	£9,905 £920	Flat
Flat 8 11, Onslow Square, South Kensington, SW7 3NJ	25 Nov 2002	£448,213	70 m² 753 sqft	£6,403 £594	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 m² 1216 sqft	£4,424 £411	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 m² 2271 sqft	£2,962 £275	Flat
Flat 2 23, Onslow Square	£2,825,000 Nov-2024	117 1259	24,145 2,243
Flat 12 25, Onslow Square	£560,000 Oct-2024	116 1248	4,827 448
Flat 11 25, Onslow Square	£1,600,000 Jul-2023	94 1011	17,021 1,581
Flat 3 23, Onslow Square	£2,800,000 B May-2023	124 1334	22,580 2,097
Flat 1 17, Onslow Square	£3,600,000 B Aug-2022	116 1248	31,034 2,883
Flat 1 1, Onslow Square	£2,300,000 Mar-2021
Flat 1a 25, Onslow Square	£560,000 Oct-2020	33 355	16,969 1,576
Garage, Onslow Square	£40,000,000 B Jan-2017
19, Onslow Square -	£4,400,000 B Mar-2016	145 1560	30,344 2,819
Flat 4 5, Onslow Square	£2,850,000 Dec-2015	101 1087	28,217 2,621
Flat 2 11, Onslow Square	£2,750,000 Apr-2015	108 1162	25,462 2,365
Flat 10 25, Onslow Square	£2,600,000 Aug-2013	134 1442	19,402 1,802
Flat 8 25, Onslow Square	£3,600,000 Mar-2013	136 1463	26,470 2,459
Flat 5 5, Onslow Square	£2,300,000 Feb-2013	124 1334	18,548 1,723
Flat 3 5, Onslow Square	£518,619 Sep-2012	112 1205	4,630 430
Flat 3 11, Onslow Square	£1,352,000 Jun-2007	82 882	16,487 1,531
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 1184	6,363 591
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 1216	6,415 595
Flat 6 5, Onslow Square	£1,050,000 Dec-2002	106 1140	9,905 920
Flat 8 11, Onslow Square	£448,213 Nov-2002	70 753	6,403 594
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 1216	4,424 411
Flat 1 1,	£350,000 Dec-1995
Flat 8 5, Onslow Square	£625,000 Jan-1995	211 2271	2,962 275

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 £16,856 sqm (£1,565 per sq ft), this is calculated from the Land Registry sold price of the 11 most recent sales.
The majority of homes in South Kensington are now selling for between £14,120 and £22,090 per square metre (£1,311 and £2,052 per square foot) , 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 approximately 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 11 property sales in Onslow Square, averaging approximately 2 home sales per year .
The average size of all the properties on Onslow Square is 104 m2 (1,119 sqft).