| 4 Portland Street, Southampton, Southampton | - | 242 m² | - |
| 7A, Portland Street, Southampton | Leasehold | 153 m² | £120,000 (1997) |
| 8 Portland Street, Southampton | Freehold | 281 m² | £283,000 (2011) |
| 13 Portland Street, Southampton, Southampton | Leasehold | 83 m² | £132,500 (2012) |
| Basement Flat, 1 Portland Street, Southampton | - | 28 m² | - |
| Flat 1, 5, Portland Street, Southampton | Leasehold | 73 m² | £173,000 (2022) |
| Flat 1, 6 Portland Street, Southampton | Leasehold | 81 m² | £195,000 (2022) |
| Flat 1, 9 Portland Street, Southampton | Leasehold | 61 m² | £149,950 (2006) |
| Flat 1, 12, Portland Street, Southampton | Leasehold | 65 m² | £309,999 (2025) |
| Flat 2, 1-2 Portland Street, Southampton | - | 22 m² | - |
| Flat 2, 5, Portland Street, Southampton | Leasehold | 47 m² | £125,000 (2022) |
| Flat 2, 6 Portland Street, Southampton | Leasehold | 63 m² | £119,995 (2013) |
| Flat 2, 9, Portland Street, Southampton | Leasehold | 62 m² | £150,500 (2006) |
| Flat 2, 10, Portland Street, Southampton | Leasehold | 66 m² | £147,950 (2006) |
| Flat 2, 12, Portland Street, Southampton | - | 51 m² | - |
| Flat 3, 5, Portland Street, Southampton | Leasehold | 85 m² | £165,000 (2015) |
| Flat 3, 9, Portland Street, Southampton | Leasehold | 39 m² | £129,950 (2006) |
| Flat 3, 10 Portland Street, Southampton | - | 46 m² | - |
| Flat 3, 12 Portland Street, Southampton | - | 18 m² | - |
| Flat 4, 6 Portland Street, Southampton, Southampton | - | 78 m² | - |
| Flat 4, 9, Portland Street, Southampton | Leasehold | 34 m² | £121,000 (2006) |
| Flat 4, 10 Portland Street, Southampton | Leasehold | 46 m² | £124,950 (2006) |
| Flat 4, 12 Portland Street, Southampton | - | 46 m² | - |
| Flat 5, 6 Portland Street, Southampton | Leasehold | 71 m² | £170,000 (2022) |
| Flat 5, 9, Portland Street, Southampton | Leasehold | 40 m² | £122,000 (2015) |
| Flat 5, 10 Portland Street, Southampton | Leasehold | 50 m² | £124,950 (2006) |
| Flat 5, 12, Portland Street, Southampton | Leasehold | 63 m² | £210,000 (2025) |
| Flat 6, 12 Portland Street, Southampton, Southampton | Leasehold | 55 m² | £310,000 (2025) |
| Flat 7, 12, Portland Street, Southampton | - | 63 m² | - |
| Flat 8, 12, Portland Street, Southampton | - | 59 m² | - |
| Flat 9, 12, Portland Street, Southampton | Leasehold | 66 m² | £310,000 (2025) |
| Flat 10, 12, Portland Street, Southampton | - | 59 m² | - |
