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 32 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LH	28 Aug 2001	£375,000			Flat (2 bed)
Flat 51 Orchard Court, Portman Square, Marble Arch, W1H 6LG -	07 Aug 2001	£2,100,000	357 m² 3842 sqft	£5,882 £546	Flat (6 bed)
Flat 55 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LH	16 Jul 2001	£400,000			Flat (2 bed)
Flat 12 Orchard Court, Portman Square, Marble Arch, W1H 6LE	10 Jul 2001	£1,185,000			Flat (4 bed)
Flat 16 Orchard Court, Portman Square, Marble Arch, W1H 6LE	18 May 2001	£1,150,000			Flat (4 bed)
Flat 80 15, Portman Square, Marble Arch, W1H 6LL	16 May 2001	£475,000	107 m² 1151 sqft	£4,439 £412	Flat (3 bed)
Flat 44 15, Portman Square, Marble Arch, W1H 6LJ	12 Apr 2001	£285,000			Flat
Flat 11 Orchard Court, Portman Square, Marble Arch, W1H 6LE	04 Jan 2001	£925,000			Flat (4 bed)
Flat 64 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LH	31 Mar 2000	£750,000			Flat (4 bed)
Flat 83 15, Portman Square, Marble Arch, W1H 6LL	30 Jun 1999	£235,000	62 m² 667 sqft	£3,790 £352	Flat (1 bed)
Flat 24 Orchard Court, Portman Square, Marble Arch, W1H 6LE	29 Jan 1999	£1,350,000			Flat (4 bed)
Flat 91 15, Portman Square, Marble Arch, W1H 6LL	04 Jan 1999	£378,000	107 m² 1151 sqft	£3,532 £328	Flat (3 bed)
Flat 94 15, Portman Square, Marble Arch, W1H 6LL	07 Sep 1998	£235,000	113 m² 1216 sqft	£2,079 £193	Flat (3 bed)
Flat 81 15, Portman Square, Marble Arch, W1H 6LL	08 May 1998	£300,000	113 m² 1216 sqft	£2,654 £246	Flat (3 bed)
Flat 65 15, Portman Square, Marble Arch, W1H 6LJ	04 Mar 1998	£380,000	103 m² 1108 sqft	£3,689 £342	Flat (2 bed)
Flat 24 15, Portman Square, Marble Arch, W1H 6LJ	29 Jul 1997	£210,000			Flat (3 bed)
Flat 70 15, Portman Square, Marble Arch, W1H 6LL	22 May 1997	£360,000			Flat (2 bed)
Flat 74 15, Portman Square, Marble Arch, W1H 6LL	04 Apr 1997	£200,000	104 m² 1119 sqft	£1,923 £178	Flat (3 bed)
Flat 19 Orchard Court, Portman Square, Marble Arch, W1H 6LE -	12 Mar 1997	£1,500,000	356 m² 3831 sqft	£4,213 £391	Flat (4 bed)
Flat 121 15, Portman Square, Marble Arch, W1H 6LL	28 Nov 1996	£60,000			Flat (1 bed)
Flat 84 15, Portman Square, Marble Arch, W1H 6LL	15 May 1996	£100,000	62 m² 667 sqft	£1,612 £149	Flat (2 bed)
Flat 52 Orchard Court, Portman Square, Marble Arch, W1H 6LG	30 Apr 1996	£1,375,000			Flat (4 bed)
Flat 110 15, Portman Square, Marble Arch, W1H 6LL	21 Dec 1995	£185,000	107 m² 1151 sqft	£1,728 £160	Flat (2 bed)
Flat 18 Fitzhardinge House, Portman Square, Marble Arch, W1H 6LQ	14 Aug 1995	£200,000			Flat (2 bed)
Flat 1 Orchard Court, Portman Square, Marble Arch, W1H 6LE -	17 May 1995	£485,000			Flat (4 bed)
Flat 17 Orchard Court, Portman Square, Marble Arch, W1H 6LE -	22 Feb 1995	£750,000	218 m² 2346 sqft	£3,440 £319	Flat (4 bed)
Flat 36 Orchard Court, Portman Square, Marble Arch, W1H 6LF	18 Jan 1995	£732,000			Flat (4 bed)
Flat 32 Fitzhardinge House, Portman Square	£375,000 Aug-2001
Flat 51 Orchard Court, Portman Square -	£2,100,000 Aug-2001	357 3842	5,882 546
Flat 55 Fitzhardinge House, Portman Square	£400,000 Jul-2001
Flat 12 Orchard Court, Portman Square	£1,185,000 Jul-2001
Flat 16 Orchard Court, Portman Square	£1,150,000 May-2001
Flat 80 15, Portman Square	£475,000 May-2001	107 1151	4,439 412
Flat 44 15, Portman Square	£285,000 Apr-2001
Flat 11 Orchard Court, Portman Square	£925,000 Jan-2001
Flat 64 Fitzhardinge House, Portman Square	£750,000 Mar-2000
Flat 83 15, Portman Square	£235,000 Jun-1999	62 667	3,790 352
Flat 24 Orchard Court, Portman Square	£1,350,000 Jan-1999
Flat 91 15, Portman Square	£378,000 Jan-1999	107 1151	3,532 328
Flat 94 15, Portman Square	£235,000 Sep-1998	113 1216	2,079 193
Flat 81 15, Portman Square	£300,000 May-1998	113 1216	2,654 246
Flat 65 15, Portman Square	£380,000 Mar-1998	103 1108	3,689 342
Flat 24 15, Portman Square	£210,000 Jul-1997
Flat 70 15, Portman Square	£360,000 May-1997
Flat 74 15, Portman Square	£200,000 Apr-1997	104 1119	1,923 178
Flat 19 Orchard Court, Portman Square -	£1,500,000 Mar-1997	356 3831	4,213 391
Flat 121 15, Portman Square	£60,000 Nov-1996
Flat 84 15, Portman Square	£100,000 May-1996	62 667	1,612 149
Flat 52 Orchard Court, Portman Square	£1,375,000 Apr-1996
Flat 110 15, Portman Square	£185,000 Dec-1995	107 1151	1,728 160
Flat 18 Fitzhardinge House, Portman Square	£200,000 Aug-1995
Flat 1 Orchard Court, Portman Square -	£485,000 May-1995
Flat 17 Orchard Court, Portman Square -	£750,000 Feb-1995	218 2346	3,440 319
Flat 36 Orchard Court, Portman Square	£732,000 Jan-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 from the price paid of the 9 most recent sales.
There are approximately 127 homes on Portman Square, we would have expected roughly 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 approximately 2 home sales per year .
The average size of all the properties on Portman Square is 103 m2 (1,108 sqft).