| 1, Twickenham Gardens, Harrow | - | 65 m² | - |
| 2, Twickenham Gardens, Harrow | Leasehold | 69 m² | £255,000 (2015) |
| 3, Twickenham Gardens, Harrow | Leasehold | 71 m² | £204,500 (2006) |
| 4, Twickenham Gardens, Harrow | Leasehold | 59 m² | £224,500 (2013) |
| 7 Twickenham Gardens, Harrow, Harrow | Leasehold | 67 m² | £350,000 (2020) |
| 8, Twickenham Gardens, Harrow | Leasehold | 70 m² | £356,000 (2016) |
| 9, Twickenham Gardens, Harrow | Leasehold | 71 m² | £105,000 (1997) |
| 10 Twickenham Gardens, Harrow, Harrow | Leasehold | 73 m² | £186,000 (2003) |
| 11 Twickenham Gardens, Harrow | Leasehold | 80 m² | £420,000 (2022) |
| 12, Twickenham Gardens, Harrow | Leasehold | 70 m² | £228,000 (2007) |
| 14 Twickenham Gardens, Harrow | Leasehold | 73 m² | £196,000 (2005) |
| 17 Twickenham Gardens, Harrow | Leasehold | 69 m² | £175,000 (2003) |
| 18, Twickenham Gardens, Harrow | Leasehold | 71 m² | £225,000 (2012) |
| 20 Twickenham Gardens, Harrow | Leasehold | 71 m² | £350,000 (2023) |
| 21 Twickenham Gardens, Harrow, Harrow | Leasehold | 81 m² | £400,000 (2021) |
| 22, Twickenham Gardens, Harrow | Leasehold | 70 m² | £319,500 (2021) |
| 24 Twickenham Gardens, Harrow | Leasehold | 70 m² | £133,000 (2002) |
| 25, Twickenham Gardens, Harrow | Leasehold | 72 m² | £401,000 (2019) |
| 26, Twickenham Gardens, Harrow | Leasehold | 70 m² | £210,000 (2009) |
| 27 Twickenham Gardens, Harrow | Leasehold | 70 m² | £345,000 (2026) |
| 28, Twickenham Gardens, Harrow | Leasehold | 70 m² | £325,000 (2019) |
| 29 Twickenham Gardens, Harrow | - | 66 m² | - |
| 30 Twickenham Gardens, Harrow | Leasehold | 69 m² | £235,000 (2011) |
| 31, Twickenham Gardens, Harrow | Leasehold | 73 m² | £250,000 (2013) |
| 32 Twickenham Gardens, Harrow | Leasehold | 71 m² | £335,000 (2023) |
| 34, Twickenham Gardens, Harrow | Leasehold | 71 m² | £348,000 (2023) |
| 35 Twickenham Gardens, Harrow | Leasehold | 71 m² | £195,000 (2003) |
| 37, Twickenham Gardens, Harrow | Leasehold | 66 m² | £208,000 (2010) |
| 38 Twickenham Gardens, Harrow | Leasehold | 66 m² | £203,000 (2006) |
| 39, Twickenham Gardens, Harrow | Leasehold | 68 m² | £353,000 (2018) |
| 40 Twickenham Gardens, Harrow | Leasehold | 70 m² | £379,950 (2023) |
| 41, Twickenham Gardens, Harrow | Leasehold | 72 m² | £242,500 (2013) |
| 42, Twickenham Gardens, Harrow | Leasehold | 70 m² | £365,000 (2017) |
| 44 Twickenham Gardens, Harrow, Harrow | Freehold | 139 m² | £720,000 (2022) |