| Flat 4/C Portman Mansions, Chiltern Street, London | Leasehold | 129 m² | £1,750,000 (2013) |
| Flat 4/E Portman Mansions, Chiltern Street, London | Leasehold | 132 m² | £2,350,000 (2013) |
| Flat 4/G Portman Mansions, Chiltern Street, London | Leasehold | 132 m² | £265,000 (1997) |
| Flat 4/K Portman Mansions, Chiltern Street, London | - | 142 m² | - |
| Flat 4/M Portman Mansions, Chiltern Street, London | Leasehold | 112 m² | £935,000 (2010) |
| Flat 4/N Portman Mansions, Chiltern Street, London | Leasehold | 72 m² | £1,460,000 (2019) |
| Flat 4/O Portman Mansions, Chiltern Street, London | Leasehold | 89 m² | £1,320,000 (2022) |
| Flat 4/R Portman Mansions, Chiltern Street, London | Leasehold | 93 m² | £1,400,000 (2015) |
| Flat 4/Y Portman Mansions, Chiltern Street, London | Leasehold | 96 m² | £1,060,000 (2014) |
| Flat 4A, Portman Mansions, Chiltern Street, London | Leasehold | 106 m² | £1,110,000 (2011) |
| Flat 4B, Portman Mansions, Chiltern Street, London | Leasehold | 85 m² | £1,200,000 (2025) |
| Flat 4F, Block 4 Portman Mansions, Chiltern Street, London | Leasehold | 157 m² | £2,905,000 (2021) |
| Flat 4J, Portman Mansions, London | Leasehold | 92 m² | £382,500 (2003) |
| Flat 4P, Portman Mansions, Chiltern Street, London | Leasehold | 109 m² | £550,000 (2006) |
| Flat 4X, Portman Mansions, Chiltern Street, London | Leasehold | 121 m² | £815,000 (2009) |
| Flat 4Z, Block 4 Portman Mansions, Chiltern Street, London | Leasehold | 90 m² | £390,000 (2004) |
| Penthouse 10 Portman Mansions, Chiltern Street, London | Leasehold | 76 m² | £525,000 (2004) |
| Penthouse 12 Portman Mansions, Chiltern Street, London | - | 95 m² | - |
