| Flat 56, Fitzhardinge House Portman Square, London, W1H 6LH | Oct 2024 | £2,000,000 | Flat / maisonette | Leasehold |
| Flat 65, Fitzhardinge House Portman Square, London, W1H 6LH | May 2024 | £4,000,000 | Flat / maisonette | Leasehold |
| Flat 63, Fitzhardinge House Portman Square, London, W1H 6LH | Apr 2024 | £5,000,000 | Flat / maisonette | Leasehold |
| Flat 57, Fitzhardinge House Portman Square, London, W1H 6LH | Mar 2022 | £507,000 | Flat / maisonette | Leasehold |
| Flat 43, Fitzhardinge House Portman Square, London, W1H 6LH | May 2018 | £250,000 | Flat / maisonette | Leasehold |
| Flat 45, Fitzhardinge House Portman Square, London, W1H 6LH | Mar 2018 | £634,900 | Other property | Leasehold |
| Flat 44, Fitzhardinge House Portman Square, London, W1H 6LH | Dec 2015 | £2,100,000 | Flat / maisonette | Leasehold |
| Flat 31, Fitzhardinge House Portman Square, London, W1H 6LH | Mar 2014 | £1,200,000 | Flat / maisonette | Leasehold |
| Flat 36, Fitzhardinge House Portman Square, London, W1H 6LH | Dec 2011 | £1,435,000 | Flat / maisonette | Leasehold |
| Flat 42, Fitzhardinge House Portman Square, London, W1H 6LH | Oct 2011 | £585,000 | Flat / maisonette | Leasehold |
| Flat 61, Fitzhardinge House Portman Square, London, W1H 6LH | Aug 2011 | £655,000 | Flat / maisonette | Leasehold |
| Flat 58, Fitzhardinge House Portman Square, London, W1H 6LH | Dec 2009 | £875,000 | Flat / maisonette | Leasehold |
| Flat 54, Fitzhardinge House Portman Square, London, W1H 6LH | Nov 2006 | £520,000 | Flat / maisonette | Leasehold |
| Flat 40, Fitzhardinge House Portman Square, London, W1H 6LH | May 2006 | £665,000 | Flat / maisonette | Leasehold |
| Flat 51, Fitzhardinge House Portman Square, London, W1H 6LH | Mar 2006 | £665,000 | Flat / maisonette | Leasehold |
| Flat 35, Fitzhardinge House Portman Square, London, W1H 6LH | Jan 2006 | £302,000 | Flat / maisonette | Leasehold |
| Flat 48, Fitzhardinge House Portman Square, London, W1H 6LH | Oct 2005 | £500,000 | Flat / maisonette | Leasehold |
| Flat 32, Fitzhardinge House Portman Square, London, W1H 6LH | Aug 2001 | £375,000 | Flat / maisonette | Leasehold |
| Flat 55, Fitzhardinge House Portman Square, London, W1H 6LH | Jul 2001 | £400,000 | Flat / maisonette | Leasehold |
| Flat 64, Fitzhardinge House Portman Square, London, W1H 6LH | Mar 2000 | £750,000 | Flat / maisonette | Leasehold |