| 53 Robert Street, Northampton | Leasehold | 103 m² | £153,000 (2012) |
| 55 Robert Street, Northampton, Northampton | Leasehold | 59 m² | £127,000 (2021) |
| 57, Robert Street, Northampton | Leasehold | 67 m² | £89,000 (2001) |
| 59 Robert Street, Northampton | Freehold | 68 m² | £159,000 (2019) |
| 61, Robert Street, Northampton | Freehold | 75 m² | £160,000 (2019) |
| 63, Robert Street, Northampton | Freehold | 73 m² | £120,000 (2014) |
| 65, Robert Street, Northampton | Freehold | 106 m² | £143,000 (2009) |
| 80, Robert Street, Northampton | - | 81 m² | - |
| 82, Robert Street, Northampton | - | 79 m² | - |
| 84, Robert Street, Northampton | Freehold | 83 m² | £142,500 (2018) |
| Flat 1, Crispian House, 67 Robert Street, Northampton | - | 54 m² | - |
| Flat 2, Crispian House, 67 Robert Street, Northampton | - | 45 m² | - |
| Flat 3, Crispian House, 67 Robert Street, Northampton | - | 45 m² | - |
| Flat 5 Crispian House, 67, Robert Street, Northampton | - | 41 m² | - |
| Flat 6, Crispian House, 67 Robert Street, Northampton | - | 42 m² | - |
| Flat 7 Crispian House, 67, Robert Street, Northampton | - | 49 m² | - |
| Flat 8, Crispian House, 67 Robert Street, Northampton | - | 50 m² | - |
| Flat 9 Crispian House, 67, Robert Street, Northampton | - | 48 m² | - |
| Flat 10 Crispian House, 67, Robert Street, Northampton | - | 41 m² | - |
| Flat 11 Crispian House, 67, Robert Street, Northampton | - | 43 m² | - |
| Flat 12 Crispian House, 67, Robert Street, Northampton | - | 50 m² | - |
| Flat 14, Crispian House, 67 Robert Street, Northampton | - | 47 m² | - |
