| 105 Northumberland Avenue, Welling | - | 80 m² | - |
| 109, Northumberland Avenue, Welling | Freehold | 79 m² | £380,000 (2020) |
| 121 Northumberland Avenue, Welling | - | 91 m² | - |
| 135 Northumberland Avenue, Welling, Welling | Freehold | 61 m² | £285,000 (2015) |
| 137, Northumberland Avenue, Welling | Freehold | 88 m² | £194,000 (2006) |
| 139 Northumberland Avenue, Welling | - | 79 m² | - |
| 141, Northumberland Avenue, Welling | Freehold | 79 m² | £250,000 (2013) |
| 145 Northumberland Avenue, Welling | - | 60 m² | - |
| 149, Northumberland Avenue, Welling | Freehold | 61 m² | £410,000 (2023) |
| 153, Northumberland Avenue, Welling | Freehold | 105 m² | £460,000 (2020) |
| 157 Northumberland Avenue, Welling, Welling | Freehold | 79 m² | £385,000 (2021) |
| 165, Northumberland Avenue, Welling | Freehold | 81 m² | £397,750 (2018) |
| 171 Northumberland Avenue, Welling | Freehold | 71 m² | £455,000 (2022) |
| 173 Northumberland Avenue, Welling, Welling | Freehold | 77 m² | £397,500 (2021) |
| 181, Northumberland Avenue, Welling | Freehold | 77 m² | £498,000 (2024) |
| 183, Northumberland Avenue, Welling | Freehold | 94 m² | £410,000 (2021) |
| 185 Northumberland Avenue, Welling, Welling | Freehold | 95 m² | £447,500 (2021) |
| 187, Northumberland Avenue, Welling | Freehold | 96 m² | £169,000 (2002) |
| 189 Northumberland Avenue, Welling | Freehold | 84 m² | £226,995 (2004) |
| 201 Northumberland Avenue, Welling | Freehold | 96 m² | £470,000 (2023) |
| 205 Northumberland Avenue, Welling, Welling | Freehold | 111 m² | £545,000 (2021) |
| 207, Northumberland Avenue, Welling | Freehold | 62 m² | £382,000 (2019) |
