| 2, Portland Place, Northampton | Freehold | 99 m² | £180,000 (2020) |
| 3 Portland Place, Northampton | Freehold | 102 m² | £210,000 (2022) |
| 4, Portland Place, Northampton | Freehold | 101 m² | £69,000 (2001) |
| 5, Portland Place, Northampton | - | 99 m² | - |
| 6 Portland Place, Northampton | - | 53 m² | - |
| 7 Portland Place, Northampton | - | 50 m² | - |
| 8 Portland Place, Northampton | - | 51 m² | - |
| 9, Portland Place, Northampton | Leasehold | 47 m² | £95,000 (2019) |
| 10 Portland Place, Northampton, Northampton | Freehold | 98 m² | £175,000 (2021) |
| 11, Portland Place, Northampton | Freehold | 96 m² | £47,000 (1997) |
| 12, Portland Place, Northampton | Freehold | 100 m² | £115,000 (2010) |
| 15 Portland Place, Northampton | - | 101 m² | - |
| 16 Portland Place, Northampton | - | 100 m² | - |
| 17, Portland Place, Northampton | Freehold | 104 m² | £35,500 (2001) |
| 18 Portland Place, Northampton | Freehold | 100 m² | £147,500 (2007) |
| 19 Portland Place, Northampton | - | 125 m² | - |
| 20 Portland Place, Northampton | - | 101 m² | - |
| 22 Portland Place, Northampton | - | 49 m² | - |
| 23 Portland Place, Northampton | - | 51 m² | - |
| 24, Portland Place, Northampton | - | 52 m² | - |
| 25, Portland Place, Northampton | - | 49 m² | - |
| 26, Portland Place, Northampton | - | 49 m² | - |
| 27, Portland Place, Northampton | - | 46 m² | - |
| 28, Portland Place, Northampton | - | 46 m² | - |
| 29 Portland Place, Northampton | - | 52 m² | - |
| 30 Portland Place, Northampton | - | 52 m² | - |
| 31, Portland Place, Northampton | - | 50 m² | - |
| 32 Portland Place, Northampton | - | 50 m² | - |
| 33 Portland Place, Northampton | - | 52 m² | - |
| 34, Portland Place, Northampton | - | 34 m² | - |
| 35, Portland Place, Northampton | - | 55 m² | - |
| 36 Portland Place, Northampton | - | 51 m² | - |
| 37 Portland Place, Northampton | - | 49 m² | - |
| 38, Portland Place, Northampton | - | 50 m² | - |
| 39, Portland Place, Northampton | - | 54 m² | - |
| 40 Portland Place, Northampton | Leasehold | 47 m² | £125,000 (2025) |
| 41, Portland Place, Northampton | - | 50 m² | - |
| 42 Portland Place, Northampton | - | 49 m² | - |
| 43 Portland Place, Northampton | - | 53 m² | - |
| 44 Portland Place, Northampton, Northampton | Leasehold | 46 m² | £105,000 (2022) |
| 45 Portland Place, Northampton | - | 49 m² | - |
| 46 Portland Place, Northampton | - | 45 m² | - |
| 47 Portland Place, Northampton | - | 56 m² | - |
| 48, Portland Place, Northampton | - | 49 m² | - |
| 49 Portland Place, Northampton | - | 125 m² | - |
| 50 Portland Place, Northampton | - | 47 m² | - |
| 51 Portland Place, Northampton | - | 48 m² | - |
| 52 Portland Place, Northampton | - | 45 m² | - |
| 53 Portland Place, Northampton | - | 48 m² | - |
| 54 Portland Place, Northampton | - | 49 m² | - |
| 55, Portland Place, Northampton | - | 48 m² | - |
| 56, Portland Place, Northampton | Leasehold | 42 m² | £23,750 (1995) |
| 57 Portland Place, Northampton | - | 49 m² | - |
| 58, Portland Place, Northampton | - | 44 m² | - |
| 59 Portland Place, Northampton | - | 51 m² | - |
| Flat 1, 1A Portland Place, Northampton | - | 103 m² | - |
| Flat 2, 1A Portland Place, Northampton | - | 103 m² | - |
| Flat 3, 1A Portland Place, Northampton | - | 71 m² | - |
| Flat 4, 1A Portland Place, Northampton | - | 103 m² | - |
| Flat 5, 1A Portland Place, Northampton | - | 103 m² | - |
| Flat 6, 1A Portland Place, Northampton | - | 71 m² | - |