| 3A Butler Avenue, Harrow | - | 71 m² | - |
| 5, Butler Avenue, Harrow | Freehold | 219 m² | £862,500 (2020) |
| 9, Butler Avenue, Harrow | - | 217 m² | - |
| 15, Butler Avenue, Harrow | Leasehold | 90 m² | £498,000 (2017) |
| 17 Butler Avenue, Harrow | - | 84 m² | - |
| 17A, Butler Avenue, Harrow | Leasehold | 71 m² | £234,000 (2018) |
| 21, Butler Avenue, Harrow | Freehold | 172 m² | £543,125 (2012) |
| 23 Butler Avenue, Harrow | - | 174 m² | - |
| 27 Butler Avenue, Harrow | Freehold | 217 m² | £1,150,000 (2023) |
| 29A, Butler Avenue, Harrow | - | 126 m² | - |
| 33 Butler Avenue, Harrow | Leasehold | 64 m² | £350,000 (2021) |
| 33A Butler Avenue, Harrow | Leasehold | 61 m² | £340,000 (2017) |
| 35, Butler Avenue, Harrow | Freehold | 86 m² | £287,500 (2003) |
| 35A, Butler Avenue, Harrow | - | 66 m² | - |
| 39A, Butler Avenue, Harrow | - | 68 m² | - |
| 39B Butler Avenue, Harrow | - | 60 m² | - |
| 41 Butler Avenue, Harrow | Freehold | 153 m² | £840,000 (2025) |
| First Floor, 3 Butler Avenue, Harrow | Leasehold | 126 m² | £382,000 (2024) |
| Flat 1, 1A Butler Avenue, Harrow | Leasehold | 69 m² | £286,500 (2016) |
| Flat 1, 31, Butler Avenue, Harrow | Leasehold | 55 m² | £280,000 (2011) |
| Flat 2, 1 Butler Avenue, Harrow | Leasehold | 59 m² | £325,000 (2017) |
| Flat 2, 31, Butler Avenue, Harrow | Leasehold | 44 m² | £203,500 (2012) |
| Flat 3, 1 Butler Avenue, Harrow, Harrow | Leasehold | 37 m² | £600,000 (2024) |
| Flat 3, 31, Butler Avenue, Harrow | - | 37 m² | - |
| Flat 4, 1, Butler Avenue, Harrow | Leasehold | 44 m² | £318,000 (2017) |
| Flat 4, 31, Butler Avenue, Harrow | Leasehold | 33 m² | £167,000 (2009) |
| Flat 5, 1 Butler Avenue, Harrow | Leasehold | 48 m² | £235,000 (2024) |
| Flat A, 37, Butler Avenue, Harrow | Leasehold | 39 m² | £267,500 (2018) |
| Flat B, 37, Butler Avenue, Harrow | Leasehold | 46 m² | £225,000 (2019) |
| Flat C, 37 Butler Avenue, Harrow | Leasehold | 30 m² | £210,000 (2019) |
| Flat D, 37 Butler Avenue, Harrow | Leasehold | 35 m² | £249,000 (2019) |
| Flat E, 37, Butler Avenue, Harrow | Leasehold | 36 m² | £185,000 (2019) |