| Flat 1 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 51 m² | £145,000 (2003) |
| Flat 2 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 46 m² | £128,000 (2021) |
| Flat 3 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 63 m² | £145,500 (2003) |
| Flat 4 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 63 m² | £137,500 (2003) |
| Flat 5 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 62 m² | £175,000 (2017) |
| Flat 6 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 77 m² | £151,000 (2005) |
| Flat 7 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 65 m² | £190,000 (2024) |
| Flat 8, Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 66 m² | £185,000 (2023) |
| Flat 9, Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 63 m² | £162,500 (2021) |
| Flat 10 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 77 m² | £160,000 (2026) |
| Flat 11, Harbour Gate, 21 Serpentine Road, Poole | Leasehold | 57 m² | £156,500 (2016) |
| Flat 12, Harbour Gate, 21 Serpentine Road, Poole | Leasehold | 69 m² | £205,000 (2022) |
| Flat 13 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 68 m² | £170,000 (2025) |
| Flat 14, Harbour Gate, 21 Serpentine Road, Poole | Leasehold | 67 m² | £150,000 (2005) |
| Flat 15, Harbour Gate, 21 Serpentine Road, Poole | Leasehold | 66 m² | £184,000 (2022) |
| Flat 16 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 64 m² | £168,500 (2021) |
| Flat 17 Harbour Gate, 21, Serpentine Road, Poole | Leasehold | 143 m² | £300,000 (2023) |
| Flat 18, Harbour Gate, 21 Serpentine Road, Poole | Leasehold | 134 m² | £342,500 (2023) |
