| 1 Harold Street, Northampton | Freehold | 75 m² | £187,000 (2026) |
| 3, Harold Street, Northampton | Freehold | 74 m² | £125,000 (2014) |
| 4 Harold Street, Northampton | Freehold | 79 m² | £118,000 (2005) |
| 5 Harold Street, Northampton | Freehold | 78 m² | £185,000 (2025) |
| 6, Harold Street, Northampton | Freehold | 73 m² | £181,000 (2021) |
| 7 Harold Street, Northampton, Northampton | Freehold | 87 m² | £228,000 (2026) |
| 8, Harold Street, Northampton | Freehold | 105 m² | £230,000 (2023) |
| 9 Harold Street, Northampton | Freehold | 74 m² | £165,000 (2024) |
| 10, Harold Street, Northampton | Freehold | 73 m² | £205,000 (2023) |
| 11, Harold Street, Northampton | Freehold | 74 m² | £184,000 (2018) |
| 12 Harold Street, Northampton | Freehold | 70 m² | £180,000 (2025) |
| 14, Harold Street, Northampton | - | 80 m² | - |
| 16, Harold Street, Northampton | - | 85 m² | - |
| 18, Harold Street, Northampton | - | 75 m² | - |
| Flat 1 Abbott House, 15 Harold Street, Northampton | - | 61 m² | - |
| Flat 1, Norpak House, Harold Street, Northampton | - | 78 m² | - |
| Flat 2 Abbott House, 15 Harold Street, Northampton | - | 60 m² | - |
| Flat 2, Norpak House, Harold Street, Northampton | - | 78 m² | - |
| Flat 3 Abbott House, 15 Harold Street, Northampton | - | 58 m² | - |
| Flat 4 Abbott House, 15 Harold Street, Northampton | - | 63 m² | - |
| Flat 5 Abbott House, 15 Harold Street, Northampton | - | 53 m² | - |
| Flat 6 Abbott House, 15 Harold Street, Northampton | - | 45 m² | - |
| Flat 7 Abbott House, 15 Harold Street, Northampton | - | 52 m² | - |
| Flat 8 Abbott House, 15 Harold Street, Northampton | - | 50 m² | - |
| Flat 9 Abbott House, 15 Harold Street, Northampton | - | 57 m² | - |
| Flat 10 Abbott House, 15 Harold Street, Northampton | - | 79 m² | - |
