| 5, Welford Avenue, Irthlingborough, Wellingborough | - | 68 m² | - |
| 7 Welford Avenue, Irthlingborough, Wellingborough | - | 71 m² | - |
| 9 Welford Avenue, Irthlingborough, Wellingborough | Freehold | 80 m² | £75,000 (2006) |
| 11, Welford Avenue, Irthlingborough, Wellingborough | Freehold | 131 m² | £125,000 (2014) |
| 19, Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 21, Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 22 Welford Avenue, Irthlingborough, Wellingborough | Freehold | 70 m² | £180,000 (2022) |
| 23, Welford Avenue, Irthlingborough, Wellingborough | - | 93 m² | - |
| 24, Welford Avenue, Irthlingborough, Wellingborough | Freehold | 78 m² | £90,000 (2010) |
| 25, Welford Avenue, Irthlingborough, Wellingborough | - | 91 m² | - |
| 27, Welford Avenue, Irthlingborough, Wellingborough | - | 71 m² | - |
| 29, Welford Avenue, Irthlingborough, Wellingborough | - | 68 m² | - |
| 30 Welford Avenue, Irthlingborough, Wellingborough | Freehold | 70 m² | £234,000 (2025) |
| 32, Welford Avenue, Irthlingborough, Wellingborough | - | 65 m² | - |
| 33, Welford Avenue, Irthlingborough, Wellingborough | Freehold | 84 m² | £42,500 (2004) |
| 34, Welford Avenue, Irthlingborough, Wellingborough | - | 69 m² | - |
| 35 Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 36, Welford Avenue, Irthlingborough, Wellingborough | - | 77 m² | - |
| 37, Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 38, Welford Avenue, Irthlingborough, Wellingborough | - | 83 m² | - |
| 40 Welford Avenue, Irthlingborough, Wellingborough | Freehold | 103 m² | £92,000 (2016) |
| 42, Welford Avenue, Irthlingborough, Wellingborough | - | 80 m² | - |
| 44 Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 46 Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 48, Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 50, Welford Avenue, Irthlingborough, Wellingborough | - | 56 m² | - |
| 50A, Welford Avenue, Irthlingborough, Wellingborough | - | 56 m² | - |
| 52 Welford Avenue, Irthlingborough, Wellingborough | - | 56 m² | - |
| 52, Welford Avenue, Irthlingborough, Wellingborough | - | 56 m² | - |
| 56 Welford Avenue, Irthlingborough, Wellingborough | - | 83 m² | - |
| 56A Welford Avenue, Irthlingborough, Wellingborough | - | 82 m² | - |
| 58 Welford Avenue, Irthlingborough, Wellingborough | - | 90 m² | - |
| 58A, Welford Avenue, Irthlingborough, Wellingborough | - | 47 m² | - |
| 60 Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 62, Welford Avenue, Irthlingborough, Wellingborough | - | 85 m² | - |
| 64, Welford Avenue, Irthlingborough, Wellingborough | - | 71 m² | - |
| 66, Welford Avenue, Irthlingborough, Wellingborough | - | 80 m² | - |
| 68, Welford Avenue, Irthlingborough, Wellingborough | - | 83 m² | - |
| 70, Welford Avenue, Irthlingborough, Wellingborough | Leasehold | 84 m² | £103,000 (2019) |
| 72 Welford Avenue, Irthlingborough, Wellingborough | Leasehold | 84 m² | £60,000 (2013) |
