| Flat 67, 15, Portman Square, London | Leasehold | 79 m² | £1,700,000 (2021) |
| Flat 68, 15 Portman Square, London | Leasehold | 128 m² | £2,000,000 (2024) |
| Flat 69, 15, Portman Square, London | Leasehold | 102 m² | £1,650,000 (2012) |
| Flat 71, 15, Portman Square, London | Leasehold | 62 m² | £735,000 (2013) |
| Flat 72, 15, Portman Square, London | Leasehold | 61 m² | £920,000 (2022) |
| Flat 74, 15 Portman Square, London | Leasehold | 104 m² | £200,000 (1997) |
| Flat 75, 15 Portman Square, London, London | Leasehold | 108 m² | £425,000 (2003) |
| Flat 76, 15 Portman Square, London | Leasehold | 105 m² | £875,000 (2008) |
| Flat 77, 15, Portman Square, London | - | 63 m² | - |
| Flat 78, 15 Portman Square, London | Leasehold | 62 m² | £600,000 (2010) |
| Flat 79, 15 Portman Square, London | - | 115 m² | - |
| Flat 80, 15, Portman Square, London | Leasehold | 107 m² | £475,000 (2001) |
| Flat 81, 15 Portman Square, London | Leasehold | 113 m² | £300,000 (1998) |
| Flat 82, 15, Portman Square, London | Leasehold | 106 m² | £2,050,000 (2019) |
| Flat 83, 15 Portman Square, London | Leasehold | 62 m² | £235,000 (1999) |
| Flat 84, 15 Portman Square, London | Leasehold | 62 m² | £100,000 (1996) |
| Flat 85, 15 Portman Square, London | Leasehold | 108 m² | £1,025,000 (2011) |
| Flat 87, 15, Portman Square, London | Leasehold | 103 m² | £1,700,000 (2015) |
| Flat 89, 15 Portman Square, London | Leasehold | 64 m² | £1,340,000 (2023) |
| Flat 90, 15 Portman Square, London | - | 62 m² | - |
| Flat 91, 15, Portman Square, London | Leasehold | 107 m² | £378,000 (1999) |
| Flat 93, 15 Portman Square, London | Leasehold | 108 m² | £213,500 (2011) |
| Flat 94, 15 Portman Square, London | Leasehold | 113 m² | £235,000 (1998) |
| Flat 95, 15 Portman Square, London | - | 61 m² | - |
| Flat 96, 15, Portman Square, London | Leasehold | 61 m² | £1,200,000 (2023) |
| Flat 97, 15, Portman Square, London | Leasehold | 110 m² | £750,000 (2020) |
| Flat 98, 15, Portman Square, London | Leasehold | 107 m² | £875,000 (2008) |
| Flat 100, 15, Portman Square, London | Leasehold | 113 m² | £1,430,000 (2020) |
| Flat 101, 15, Portman Square, London | Leasehold | 61 m² | £1,350,000 (2021) |
| Flat 102, 15, Portman Square, London | Leasehold | 63 m² | £1,150,000 (2016) |
| Flat 106, 15, Portman Square, London | Leasehold | 112 m² | £1,082,000 (2009) |
| Flat 108, 15, Portman Square, London | - | 68 m² | - |
| Flat 110, 15, Portman Square, London | Leasehold | 107 m² | £185,000 (1995) |
| Flat 111, 15 Portman Square, London, London | Leasehold | 96 m² | £617,000 (2006) |
| Flat 112, 15, Portman Square, London | Leasehold | 130 m² | £3,350,000 (2017) |
| Flat 114, 15, Portman Square, London | Leasehold | 108 m² | £1,300,000 (2010) |
| Flat 115, 15 Portman Square, London | Leasehold | 104 m² | £1,000,000 (2017) |
| Flat 117, 15, Portman Square, London | Leasehold | 93 m² | £1,650,000 (2010) |
| Flat 119, 15, Portman Square, London | - | 47 m² | - |
| Flat 120, 15 Portman Square, London | Leasehold | 50 m² | £660,000 (2017) |
| Flat 123, 15 Portman Square, London | Leasehold | 62 m² | £350,000 (2006) |
