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 89 15, Portman Square, Marble Arch, W1H 6LL	14 Dec 2023	£1,340,000	61 sqm	£21,967	Flat (1 bed)
Flat 96 15, Portman Square, Marble Arch, W1H 6LL	01 Nov 2023	£1,200,000	61 sqm	£19,672	Flat (2 bed)
Flat 72 15, Portman Square, Marble Arch, W1H 6LL	09 Dec 2022	£920,000 B	61 sqm	£15,081	Flat (1 bed)
Flat 67 15, Portman Square, Marble Arch, W1H 6LL	20 Jul 2021	£1,700,000	79 sqm	£21,518	Flat (2 bed)
Flat 101 15, Portman Square, Marble Arch, W1H 6LL	18 Mar 2021	£1,350,000	61 sqm	£22,131	Flat (2 bed)
Flat 97 15, Portman Square, Marble Arch, W1H 6LL	16 Nov 2020	£750,000	110 sqm	£6,818	Flat (2 bed)
Flat 100 15, Portman Square, Marble Arch, W1H 6LL	20 Jan 2020	£1,430,000	113 sqm	£12,654	Flat (2 bed)
Flat 82 15, Portman Square, Marble Arch, W1H 6LL	23 Jul 2019	£2,050,000	106 sqm	£19,339	Flat (3 bed)
Flat 112 15, Portman Square, Marble Arch, W1H 6LL	01 Nov 2017	£3,350,000 B	130 sqm	£25,769	Flat (4 bed)
Flat 120 15, Portman Square, Marble Arch, W1H 6LL	21 Aug 2017	£660,000	50 sqm	£13,200	Flat (1 bed)
Flat 115 15, Portman Square, Marble Arch, W1H 6LL	02 Mar 2017	£1,000,000	110 sqm	£9,090	Flat (2 bed)
Flat 102 15, Portman Square, Marble Arch, W1H 6LL	02 Dec 2016	£1,150,000	63 sqm	£18,253	Flat (2 bed)
Flat 68 15, Portman Square, Marble Arch, W1H 6LL	31 Mar 2016	£2,000,000 B	128 sqm	£15,625	Flat (2 bed)
Flat 87 15, Portman Square, Marble Arch, W1H 6LL	09 Dec 2015	£1,700,000	103 sqm	£16,504	Flat (2 bed)
Flat 104 15, Portman Square, Marble Arch, W1H 6LL	08 May 2013	£564,000			Flat (2 bed)
Flat 71 15, Portman Square, Marble Arch, W1H 6LL	03 May 2013	£735,000	63 sqm	£11,666	Flat (1 bed)
Flat 69 15, Portman Square, Marble Arch, W1H 6LL	03 Jul 2012	£1,650,000	102 sqm	£16,176	Flat (3 bed)
Flat 85 15, Portman Square, Marble Arch, W1H 6LL	06 Dec 2011	£1,025,000	107 sqm	£9,579	Flat (3 bed)
Flat 93 15, Portman Square, Marble Arch, W1H 6LL	10 Nov 2011	£213,500	110 sqm	£1,940	Flat (3 bed)
Flat 114 15, Portman Square, Marble Arch, W1H 6LL	15 Nov 2010	£1,300,000	108 sqm	£12,037	Flat (2 bed)
Flat 117 15, Portman Square, Marble Arch, W1H 6LL	24 Jun 2010	£1,650,000	93 sqm	£17,741	Flat (2 bed)
Flat 78 15, Portman Square, Marble Arch, W1H 6LL	23 Feb 2010	£600,000	64 sqm	£9,375	Flat (2 bed)
Flat 106 15, Portman Square, Marble Arch, W1H 6LL	21 Sep 2009	£1,082,000	112 sqm	£9,660	Flat (2 bed)
Flat 76 15, Portman Square, Marble Arch, W1H 6LL	05 Nov 2008	£875,000	105 sqm	£8,333	Flat (3 bed)
Flat 86 15, Portman Square, Marble Arch, W1H 6LL	15 Oct 2008	£850,000			Flat (3 bed)
Flat 98 15, Portman Square, Marble Arch, W1H 6LL	02 Jun 2008	£875,000	107 sqm	£8,177	Flat (2 bed)
Flat 123 15, Portman Square, Marble Arch, W1H 6LL	17 Nov 2006	£350,000	62 sqm	£5,645	Flat (1 bed)
Flat 111 15, Portman Square, Marble Arch, W1H 6LL	27 Oct 2006	£617,000	96 sqm	£6,427	Flat (3 bed)
Flat 105 15, Portman Square, Marble Arch, W1H 6LL	30 Nov 2005	£625,000			Flat (2 bed)
Flat 88 15, Portman Square, Marble Arch, W1H 6LL	21 Apr 2005	£399,000			Flat (2 bed)
Flat 89 15, Portman Square	£1,340,000 Dec-2023	61	21,967
Flat 96 15, Portman Square	£1,200,000 Nov-2023	61	19,672
Flat 72 15, Portman Square	£920,000 B Dec-2022	61	15,081
Flat 67 15, Portman Square	£1,700,000 Jul-2021	79	21,518
Flat 101 15, Portman Square	£1,350,000 Mar-2021	61	22,131
Flat 97 15, Portman Square	£750,000 Nov-2020	110	6,818
Flat 100 15, Portman Square	£1,430,000 Jan-2020	113	12,654
Flat 82 15, Portman Square	£2,050,000 Jul-2019	106	19,339
Flat 112 15, Portman Square	£3,350,000 B Nov-2017	130	25,769
Flat 120 15, Portman Square	£660,000 Aug-2017	50	13,200
Flat 115 15, Portman Square	£1,000,000 Mar-2017	110	9,090
Flat 102 15, Portman Square	£1,150,000 Dec-2016	63	18,253
Flat 68 15, Portman Square	£2,000,000 B Mar-2016	128	15,625
Flat 87 15, Portman Square	£1,700,000 Dec-2015	103	16,504
Flat 104 15, Portman Square	£564,000 May-2013
Flat 71 15, Portman Square	£735,000 May-2013	63	11,666
Flat 69 15, Portman Square	£1,650,000 Jul-2012	102	16,176
Flat 85 15, Portman Square	£1,025,000 Dec-2011	107	9,579
Flat 93 15, Portman Square	£213,500 Nov-2011	110	1,940
Flat 114 15, Portman Square	£1,300,000 Nov-2010	108	12,037
Flat 117 15, Portman Square	£1,650,000 Jun-2010	93	17,741
Flat 78 15, Portman Square	£600,000 Feb-2010	64	9,375
Flat 106 15, Portman Square	£1,082,000 Sep-2009	112	9,660
Flat 76 15, Portman Square	£875,000 Nov-2008	105	8,333
Flat 86 15, Portman Square	£850,000 Oct-2008
Flat 98 15, Portman Square	£875,000 Jun-2008	107	8,177
Flat 123 15, Portman Square	£350,000 Nov-2006	62	5,645
Flat 111 15, Portman Square	£617,000 Oct-2006	96	6,427
Flat 105 15, Portman Square	£625,000 Nov-2005
Flat 88 15, Portman Square	£399,000 Apr-2005

The data above for Portman 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 Portman Square, Marble Arch is £18,883 sqm (£1,754 per sq ft), this is from sold property prices of the 13 most recent sales.
There are about 127 homes on Portman Square, we would have expected about 18 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 13 property sales in Portman Square, averaging approximately 3 home sales per year .
The average size of all the properties on Portman Square is 102 m2 (1,097 sqft).

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