| 1, Castle Mews, Wellingborough | Leasehold | 46 m² | £45,000 (2002) |
| 3, Castle Mews, Wellingborough | - | 45 m² | - |
| 4, Castle Mews, Wellingborough | Leasehold | 49 m² | £85,000 (2004) |
| 5, Castle Mews, Wellingborough | Leasehold | 47 m² | £19,000 (1996) |
| 6, Castle Mews, Wellingborough | Leasehold | 55 m² | £115,000 (2020) |
| 7, Castle Mews, Wellingborough | Leasehold | 50 m² | £60,000 (2011) |
| 8, Castle Mews, Wellingborough | - | 48 m² | - |
| 9, Castle Mews, Wellingborough | Leasehold | 48 m² | £65,000 (2013) |
| 10, Castle Mews, Wellingborough | Leasehold | 48 m² | £77,000 (2014) |
| 11, Castle Mews, Wellingborough | Leasehold | 49 m² | £29,500 (1999) |
| 12 Castle Mews, Wellingborough | - | 48 m² | - |
| 13, Castle Mews, Wellingborough | Leasehold | 47 m² | £90,000 (2017) |
| 14 Castle Mews, Wellingborough | Leasehold | 36 m² | £52,000 (2003) |
| 15, Castle Mews, Wellingborough | Leasehold | 36 m² | £55,000 (2003) |
| 16, Castle Mews, Wellingborough | Leasehold | 46 m² | £91,000 (2007) |
| 17 Castle Mews, Wellingborough | Leasehold | 35 m² | £72,000 (2014) |
| 18 Castle Mews, Wellingborough | Leasehold | 36 m² | £62,000 (2009) |
| 19, Castle Mews, Wellingborough | - | 47 m² | - |
| 20 Castle Mews, Wellingborough | Leasehold | 35 m² | £50,000 (2007) |
| 21 Castle Mews, Wellingborough | Leasehold | 36 m² | £108,000 (2023) |
| 22 Castle Mews, Wellingborough | - | 98 m² | - |
| 23 Castle Mews, Wellingborough | - | 95 m² | - |
| 25 Castle Mews, Wellingborough | - | 113 m² | - |
| 26 Castle Mews, Wellingborough | - | 113 m² | - |
| 27 Castle Mews, Wellingborough | - | 61 m² | - |
| 28 Castle Mews, Wellingborough | - | 61 m² | - |
| 29 Castle Mews, Wellingborough | - | 50 m² | - |
| 30 Castle Mews, Wellingborough | - | 50 m² | - |
| 31 Castle Mews, Wellingborough | - | 61 m² | - |
| 32 Castle Mews, Wellingborough | - | 61 m² | - |
