| 2 Northwick Avenue, Harrow | - | 228 m² | - |
| 4A Northwick Avenue, Harrow | Freehold | 117 m² | £324,000 (2012) |
| 4C, Northwick Avenue, Harrow | Freehold | 97 m² | £153,000 (2000) |
| 8, Northwick Avenue, Harrow | Freehold | 138 m² | £456,000 (2013) |
| 10 Northwick Avenue, Harrow | - | 117 m² | - |
| 12, Northwick Avenue, Harrow | Freehold | 203 m² | £600,000 (2008) |
| 16, Northwick Avenue, Harrow | Freehold | 108 m² | £561,000 (2017) |
| 18, Northwick Avenue, Harrow | Freehold | 328 m² | £289,000 (2000) |
| 20, Northwick Avenue, Harrow | Freehold | 210 m² | £600,000 (2016) |
| 20A, Northwick Avenue, Harrow | Freehold | 147 m² | £790,000 (2017) |
| 22, Northwick Avenue, Harrow | Freehold | 109 m² | £375,000 (2008) |
| 24 Northwick Avenue, Harrow | Freehold | 140 m² | £617,200 (2016) |
| 26, Northwick Avenue, Harrow | Freehold | 131 m² | £680,000 (2021) |
| 32, Northwick Avenue, Harrow | Freehold | 108 m² | £355,000 (2007) |
| 36 Northwick Avenue, Harrow | Freehold | 168 m² | £840,000 (2024) |
| 38A, Northwick Avenue, Harrow | - | 117 m² | - |
| 40 Northwick Avenue, Harrow | - | 84 m² | - |
| 40A Northwick Avenue, Harrow | - | 79 m² | - |
| 42, Northwick Avenue, Harrow | Freehold | 142 m² | £159,000 (1998) |
| 44, Northwick Avenue, Harrow | Freehold | 139 m² | £420,000 (2011) |
| 46 Northwick Avenue, Harrow | Freehold | 175 m² | £241,000 (2000) |
| 48, Northwick Avenue, Harrow | Freehold | 95 m² | £400,000 (2012) |
| 48A Northwick Avenue, Harrow | - | 101 m² | - |
| 50, Northwick Avenue, Harrow | Freehold | 214 m² | £1,125,000 (2018) |
| 52 Northwick Avenue, Harrow | Freehold | 226 m² | £550,000 (2015) |
| 66 Northwick Avenue, Harrow, Harrow | Leasehold | 77 m² | £239,000 (2007) |
| 66A Northwick Avenue, Harrow | Leasehold | 67 m² | £260,000 (2015) |
| 68A Northwick Avenue, Harrow | Leasehold | 62 m² | £195,000 (2006) |
| Flat 6, 22 Northwick Avenue, Harrow | - | 20 m² | - |
| Yogi Krupa Villa, 2A Northwick Avenue, Harrow | - | 113 m² | - |
