| 2 Onslow Square, London | Leasehold | 171 m² | £3,700,000 (2024) |
| 2A Onslow Square, London | Leasehold | 80 m² | £550,000 (2008) |
| 4 Onslow Square, London, London | Leasehold | 197 m² | £4,100,000 (2024) |
| 16, Onslow Square, London | - | 225 m² | - |
| Flat 1, 6, Onslow Square, London | - | 108 m² | - |
| Flat 1, 14, Onslow Square, London | Leasehold | 118 m² | £440,000 (1995) |
| Flat 3, 14, Onslow Square, London | Leasehold | 142 m² | £2,600,000 (2010) |
| Flat 3, 20 Onslow Square, London | Leasehold | 61 m² | £600,000 (2004) |
| Flat 4 &5, 20 Onslow Square, London | Leasehold | 199 m² | £6,200,000 (2017) |
| Flat 4, 6, Onslow Square, London | Leasehold | 120 m² | £2,950,000 (2013) |
| Flat 4, 14, Onslow Square, London | Leasehold | 122 m² | £1,999,000 (2014) |
| Flat 5, 6, Onslow Square, London | Leasehold | 106 m² | £425,000 (1996) |
| Flat 5, 14, Onslow Square, London | - | 116 m² | - |
| Flat 6, 6, Onslow Square, London | Leasehold | 127 m² | £1,030,000 (2010) |
| Flat 6, 14, Onslow Square, London | Leasehold | 121 m² | £3,200,000 (2015) |
| Flat 6, 20, Onslow Square, London | Leasehold | 128 m² | £100,000 (2005) |
| Flat 7, 6, Onslow Square, London | Leasehold | 78 m² | £1,800,000 (2021) |
| Flat 7, 14, Onslow Square, London | - | 118 m² | - |
| Flat 7, 20 Onslow Square, London | - | 65 m² | - |
| Flat 8, 6, Onslow Square, London | - | 102 m² | - |
| Flat 8, 14, Onslow Square, London | Leasehold | 122 m² | £3,600,000 (2016) |
| Flat 8, 20 Onslow Square, London | Leasehold | 110 m² | £2,280,000 (2025) |
| Flat 9, 14, Onslow Square, London | Leasehold | 110 m² | £2,200,000 (2025) |
| Flat 9, 20 Onslow Square, London | Leasehold | 61 m² | £485,000 (2006) |
| Flat 10, 14, Onslow Square, London | Leasehold | 114 m² | £1,975,000 (2024) |
