| Flat 1, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 32 m² | £160,000 (2009) |
| Flat 2, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 31 m² | £350,000 (2015) |
| Flat 3, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 56 m² | £615,000 (2019) |
| Flat 4, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 32 m² | £425,000 (2015) |
| Flat 5, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £178,000 (2007) |
| Flat 6, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £240,000 (2013) |
| Flat 8, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 35 m² | £230,000 (2023) |
| Flat 9, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 30 m² | £162,500 (2006) |
| Flat 10, Alleyn Court, 123, Sussex Gardens, London | Leasehold | 30 m² | £205,000 (2009) |
| Flat 11, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 31 m² | £400,000 (2015) |
| Flat 12, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 30 m² | £170,000 (2007) |
| Flat 12A, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 31 m² | £375,000 (2016) |
| Flat 14, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £120,000 (2007) |
| Flat 16, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 32 m² | £163,600 (2006) |
| Flat 17, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 28 m² | £47,000 (2012) |
| Flat 18, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £162,000 (2006) |
| Flat 19, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 32 m² | £400,000 (2017) |
| Flat 20, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £400,000 (2017) |
| Flat 21, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 26 m² | £240,000 (2013) |
| Flat 22, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 27 m² | £310,000 (2024) |
| Flat 23, Alleyn Court, 123 Sussex Gardens, London | Leasehold | 29 m² | £159,000 (2009) |
| Flat 27, Alleyn Court, Sussex Gardens, London | Leasehold | 35 m² | £86,000 (2012) |
| Flat A, Alleyn Court, 123 Sussex Gardens, London | - | 49 m² | - |
| Flat B, Alleyn Court, 123 Sussex Gardens, London | - | 37 m² | - |
| Flat C, Alleyn Court, 123 Sussex Gardens, London | - | 37 m² | - |
