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 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ	30 Sep 2021	£1,725,000	82 m² 882 sqft	£21,036 £1,954	Flat (2 bed)
Flat 17 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ	24 Apr 2020	£1,375,000	58 m² 624 sqft	£23,706 £2,202	Flat (1 bed)
Flat 5 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	29 Nov 2019	£825,000 B	60 m² 645 sqft	£13,750 £1,277	Flat (1 bed)
Flat 16 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	22 Mar 2019	£572,000	111 m² 1194 sqft	£5,153 £478	Flat (2 bed)
Flat 7 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	08 Jan 2018	£1,846,934	86 m² 925 sqft	£21,475 £1,995	Flat (2 bed)
Flat 12 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	10 May 2017	£725,000			Flat (1 bed)
Flat 22 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	24 May 2013	£1,400,000	87 m² 936 sqft	£16,091 £1,494	Flat (2 bed)
Flat 11 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	29 Jan 2010	£800,000	86 m² 925 sqft	£9,302 £864	Flat (2 bed)
Flat 28 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ	16 Nov 2009	£540,000	59 m² 635 sqft	£9,152 £850	Flat (2 bed)
Flat 6 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	31 Jan 2007	£625,000	86 m² 925 sqft	£7,267 £675	Flat (2 bed)
Flat 21 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ -	30 Jun 2005	£440,000	68 m² 731 sqft	£6,470 £601	Flat (2 bed)
Flat 18 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ	14 Aug 1995	£200,000			Flat (2 bed)
Flat 2 Fitzhardinge House, Portman Square	£1,725,000 Sep-2021	82 882	21,036 1,954
Flat 17 Fitzhardinge House, Portman Square	£1,375,000 Apr-2020	58 624	23,706 2,202
Flat 5 Fitzhardinge House, Portman Square -	£825,000 B Nov-2019	60 645	13,750 1,277
Flat 16 Fitzhardinge House, Portman Square -	£572,000 Mar-2019	111 1194	5,153 478
Flat 7 Fitzhardinge House, Portman Square -	£1,846,934 Jan-2018	86 925	21,475 1,995
Flat 12 Fitzhardinge House, Portman Square -	£725,000 May-2017
Flat 22 Fitzhardinge House, Portman Square -	£1,400,000 May-2013	87 936	16,091 1,494
Flat 11 Fitzhardinge House, Portman Square -	£800,000 Jan-2010	86 925	9,302 864
Flat 28 Fitzhardinge House, Portman Square	£540,000 Nov-2009	59 635	9,152 850
Flat 6 Fitzhardinge House, Portman Square -	£625,000 Jan-2007	86 925	7,267 675
Flat 21 Fitzhardinge House, Portman Square -	£440,000 Jun-2005	68 731	6,470 601
Flat 18 Fitzhardinge House, Portman Square	£200,000 Aug-1995

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 £18,991 sqm (£1,764 per sq ft), this is calculated from the selling price of the 9 most recent sales.
There are roughly 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 9 property sales in Portman Square, averaging about 2 home sales per year .
The average size of all the properties on Portman Square is 103 m2 (1,108 sqft).