| 99 Northumberland Road, Harrow | Freehold | 100 m² | £535,000 (2015) |
| 103, Northumberland Road, Harrow | Freehold | 100 m² | £420,400 (2013) |
| 109, Northumberland Road, Harrow | Freehold | 87 m² | £552,000 (2018) |
| 113, Northumberland Road, Harrow | Freehold | 140 m² | £750,000 (2024) |
| 117 Northumberland Road, Harrow | Freehold | 86 m² | £610,000 (2025) |
| 119 Northumberland Road, Harrow | Freehold | 107 m² | £700,000 (2023) |
| 123, Northumberland Road, Harrow | Freehold | 142 m² | £693,000 (2022) |
| 129, Northumberland Road, Harrow | Freehold | 107 m² | £435,000 (2013) |
| 131 Northumberland Road, Harrow | Freehold | 136 m² | £325,000 (2010) |
| 137, Northumberland Road, Harrow | Freehold | 102 m² | £441,000 (2013) |
| 139 Northumberland Road, Harrow, Harrow | Freehold | 121 m² | £660,000 (2016) |
| 141, Northumberland Road, Harrow | Freehold | 132 m² | £705,000 (2016) |
| 147, Northumberland Road, Harrow | Freehold | 119 m² | £428,000 (2013) |
| 153 Northumberland Road, Harrow | Freehold | 166 m² | £873,000 (2025) |
| 157 Northumberland Road, Harrow | Freehold | 141 m² | £895,000 (2023) |
| 163, Northumberland Road, Harrow | Freehold | 101 m² | £585,000 (2017) |
| 165, Northumberland Road, Harrow | - | 96 m² | - |
| 175, Northumberland Road, Harrow | Freehold | 129 m² | £692,500 (2021) |
| 177, Northumberland Road, Harrow | Freehold | 115 m² | £565,000 (2014) |
| 179 Northumberland Road, Harrow | - | 102 m² | - |
| 183, Northumberland Road, Harrow | Freehold | 140 m² | £760,000 (2019) |
