| Flat 1, 24 Onslow Square, London | Leasehold | 71 m² | £1,730,000 (2024) |
| Flat 1, 32 Onslow Square, London | - | 176 m² | - |
| Flat 1, 38, Onslow Square, London | Leasehold | 113 m² | £3,000,000 (2018) |
| Flat 2, 38, Onslow Square, London | Leasehold | 78 m² | £6,700,000 (2020) |
| Flat 3, 24, Onslow Square, London | Leasehold | 72 m² | £1,700,000 (2021) |
| Flat 3, 32, Onslow Square, London | Leasehold | 184 m² | £7,550,000 (2017) |
| Flat 3, 38 Onslow Square, London | Leasehold | 124 m² | £3,900,000 (2014) |
| Flat 4, 24 Onslow Square, London | - | 52 m² | - |
| Flat 4, 38 Onslow Square, London | - | 140 m² | - |
| Flat 5, 24, Onslow Square, London | Leasehold | 72 m² | £1,950,000 (2018) |
| Flat 5, 32, Onslow Square, London | Leasehold | 197 m² | £3,850,000 (2010) |
| Flat 5, 38, Onslow Square, London | Leasehold | 107 m² | £3,250,000 (2014) |
| Flat 6, 32, Onslow Square, London | Leasehold | 73 m² | £1,375,000 (2010) |
| Flat 7, 24, Onslow Square, London | Leasehold | 72 m² | £1,180,000 (2011) |
| Flat 8, 24, Onslow Square, London | - | 51 m² | - |
| Flat 8, 38 Onslow Square, London, London | - | 115 m² | - |
| Flat 9, 24, Onslow Square, London | Leasehold | 59 m² | £1,135,000 (2009) |
| Flat 10, 24, Onslow Square, London | - | 45 m² | - |
