| Flat 26, Fitzhardinge House Portman Square, London, W1H 6LQ | Jul 2026 | £400,000 | Other property | Leasehold |
| Flat 22, Fitzhardinge House Portman Square, London, W1H 6LQ | Oct 2024 | £2,000,000 | Flat / maisonette | Leasehold |
| Flat 2, Fitzhardinge House Portman Square, London, W1H 6LQ | Sep 2021 | £1,725,000 | Flat / maisonette | Leasehold |
| Flat 17, Fitzhardinge House Portman Square, London, W1H 6LQ | Apr 2020 | £1,375,000 | Flat / maisonette | Leasehold |
| Flat 5, Fitzhardinge House Portman Square, London, W1H 6LQ | Nov 2019 | £825,000 | Flat / maisonette | Leasehold |
| Flat 16, Fitzhardinge House Portman Square, London, W1H 6LQ | Mar 2019 | £572,000 | Flat / maisonette | Leasehold |
| Flat 7, Fitzhardinge House Portman Square, London, W1H 6LQ | Jan 2018 | £1,846,934 | Flat / maisonette | Leasehold |
| Flat 12, Fitzhardinge House Portman Square, London, W1H 6LQ | May 2017 | £725,000 | Flat / maisonette | Leasehold |
| Flat 11, Fitzhardinge House Portman Square, London, W1H 6LQ | Jan 2010 | £800,000 | Flat / maisonette | Leasehold |
| Flat 28, Fitzhardinge House Portman Square, London, W1H 6LQ | Nov 2009 | £540,000 | Flat / maisonette | Leasehold |
| Flat 6, Fitzhardinge House Portman Square, London, W1H 6LQ | Jan 2007 | £625,000 | Flat / maisonette | Leasehold |
| Flat 21, Fitzhardinge House Portman Square, London, W1H 6LQ | Jun 2005 | £440,000 | Flat / maisonette | Leasehold |
| Flat 18, Fitzhardinge House Portman Square, London, W1H 6LQ | Aug 1995 | £200,000 | Flat / maisonette | Leasehold |