| 1A William Street, Kettering | - | 47 m² | - |
| 1B, William Street, Kettering | - | 48 m² | - |
| 1C, William Street, Kettering | - | 46 m² | - |
| 3B William Street, Kettering, Kettering | - | 47 m² | - |
| 4 William Street, Kettering | Freehold | 88 m² | £275,000 (2026) |
| 6 William Street, Kettering | Freehold | 122 m² | £56,500 (1998) |
| 7 William Street, Kettering | - | 133 m² | - |
| 9 William Street, Kettering | Freehold | 85 m² | £185,000 (2026) |
| 9A, William Street, Kettering | - | 67 m² | - |
| 10 William Street, Kettering | Freehold | 105 m² | £177,500 (2026) |
| 11, William Street, Kettering | Freehold | 85 m² | £125,000 (2016) |
| 13, William Street, Kettering | Freehold | 91 m² | £215,000 (2021) |
| 14 William Street, Kettering | Freehold | 128 m² | £140,000 (2007) |
| 15 William Street, Kettering | Freehold | 86 m² | £202,500 (2026) |
| 22, William Street, Kettering | Freehold | 74 m² | £160,000 (2019) |
| 23 William Street, Kettering | Freehold | 98 m² | £16,500 (2000) |
| 24, William Street, Kettering | - | 86 m² | - |
| 25 William Street, Kettering | - | 99 m² | - |
| 26, William Street, Kettering | Freehold | 91 m² | £240,000 (2022) |
| 27, William Street, Kettering | Freehold | 110 m² | £180,000 (2017) |
| 29, William Street, Kettering | Freehold | 118 m² | £250,000 (2022) |
| 30, William Street, Kettering | Freehold | 95 m² | £188,000 (2020) |
| 31, William Street, Kettering | Freehold | 95 m² | £270,000 (2024) |
| 32, William Street, Kettering | Freehold | 80 m² | £168,000 (2026) |
| 33, William Street, Kettering | Freehold | 111 m² | £180,000 (2024) |
| 34 William Street, Kettering | Freehold | 90 m² | £160,000 (2017) |