| 1 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 2 St. Peters House, Castle Street, Northampton | - | 57 m² | - |
| 3 St. Peters House, Castle Street, Northampton | - | 42 m² | - |
| 5 St. Peters House, Castle Street, Northampton | Leasehold | 54 m² | £125,000 (2017) |
| 6 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 7 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 8 St. Peters House, Castle Street, Northampton | - | 83 m² | - |
| 9 St. Peters House, Castle Street, Northampton | - | 83 m² | - |
| 10 St. Peters House, Castle Street, Northampton | - | 83 m² | - |
| 12 St. Peters House, Castle Street, Northampton | - | 58 m² | - |
| 13 St. Peters House, Little Cross Street, Northampton | Leasehold | 56 m² | £115,000 (2016) |
| 14 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 15 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 16 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 17 St. Peters House, Castle Street, Northampton | - | 39 m² | - |
| 18 St. Peters House, Castle Street, Northampton | - | 40 m² | - |
| 19 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 20 St. Peters House, Castle Street, Northampton | Leasehold | 56 m² | £90,000 (2015) |
| 21 St. Peters House, Little Cross Street, Northampton | - | 51 m² | - |
| 22 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 23 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 25 St. Peters House, Little Cross Street, Northampton | - | 57 m² | - |
| 26 St. Peters House, Castle Street, Northampton | - | 57 m² | - |
| 28 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 29 St. Peters House, Castle Street, Northampton | Leasehold | 56 m² | £100,000 (2016) |
| 30 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 31 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 32 St. Peters House, Castle Street, Northampton | - | 57 m² | - |
| 33 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 34 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 35 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 36 St. Peters House, Castle Street, Northampton | - | 40 m² | - |
| 38 St. Peters House, Castle Street, Northampton | - | 55 m² | - |
| 40 St. Peters House, Castle Street, Northampton | - | 56 m² | - |
| 41 St. Peters House, Castle Street, Northampton | - | 54 m² | - |
| 42 St. Peters House, Castle Street, Northampton | Leasehold | 70 m² | £120,000 (2019) |
| 44 St. Peters House, Castle Street, Northampton | Leasehold | 72 m² | £77,000 (2012) |
| 45 St. Peters House, Castle Street, Northampton | - | 52 m² | - |
| 47 St. Peters House, Castle Street, Northampton | Leasehold | 57 m² | £127,500 (2022) |
| 48 St. Peters House, Castle Street, Northampton | - | 39 m² | - |
| 49 St. Peters House, Castle Street, Northampton | - | 41 m² | - |
| 51 St. Peters House, Castle Street, Northampton | - | 58 m² | - |