| 1A, South Street, Isham, Kettering | Freehold | 339 m² | £720,000 (2021) |
| 1B, South Street, Isham, Kettering | - | 77 m² | - |
| 2, South Street, Isham, Kettering | - | 165 m² | - |
| 3A South Street, Isham, Kettering | Freehold | 186 m² | £412,500 (2016) |
| 5 South Street, Isham, Kettering | Freehold | 88 m² | £219,000 (2004) |
| 7 South Street, Isham, Kettering | - | 99 m² | - |
| 9, South Street, Isham, Kettering | Freehold | 107 m² | £330,000 (2015) |
| 10, South Street, Isham, Kettering | Freehold | 92 m² | £184,950 (2009) |
| 15, South Street, Isham, Kettering | Freehold | 146 m² | £270,000 (2017) |
| 16, South Street, Isham, Kettering | Freehold | 169 m² | £447,500 (2015) |
| 20 South Street, Isham, Kettering | Freehold | 116 m² | £286,000 (2025) |
| 22, South Street, Isham, Kettering | Freehold | 102 m² | £260,000 (2026) |
| 26 South Street, Isham, Kettering | Freehold | 99 m² | £260,000 (2025) |
| 28 South Street, Isham, Kettering | - | 89 m² | - |
| 30, South Street, Isham, Kettering | - | 93 m² | - |
| 32, South Street, Isham, Kettering | Freehold | 97 m² | £168,000 (2012) |
| 34, South Street, Isham, Kettering | - | 97 m² | - |
| 36 South Street, Isham, Kettering | - | 97 m² | - |
| 38 South Street, Isham, Kettering | - | 70 m² | - |
| 40, South Street, Isham, Kettering | - | 73 m² | - |
| 42 South Street, Isham, Kettering | Freehold | 87 m² | £275,000 (2026) |
| 44, South Street, Isham, Kettering | - | 75 m² | - |
| 46, South Street, Isham, Kettering | - | 75 m² | - |
| 48, South Street, Isham, Kettering | - | 75 m² | - |
| 52, South Street, Isham, Kettering | - | 75 m² | - |
| 54 South Street, Isham, Kettering | Freehold | 74 m² | £230,000 (2017) |