| Flat 1 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £400,000 (2019) |
| Flat 2 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £405,000 (2019) |
| Flat 3 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £407,000 (2019) |
| Flat 4 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £362,780 (2020) |
| Flat 5 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £365,000 (2020) |
| Flat 6 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £390,000 (2020) |
| Flat 7 Calla Court, Tranquil Lane, Harrow | Leasehold | 51 m² | £305,000 (2019) |
| Flat 8 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £390,000 (2020) |
| Flat 9 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £399,000 (2019) |
| Flat 10 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £418,500 (2019) |
| Flat 11 Calla Court, Tranquil Lane, Harrow | Leasehold | 51 m² | £325,000 (2025) |
| Flat 12 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £395,000 (2020) |
| Flat 13 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £395,000 (2020) |
| Flat 14 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £415,000 (2019) |
| Flat 15 Calla Court, Tranquil Lane, Harrow | Leasehold | 51 m² | £300,000 (2020) |
| Flat 16 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £360,000 (2020) |
| Flat 17 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £412,500 (2019) |
| Flat 18 Calla Court, Tranquil Lane, Harrow | Leasehold | 51 m² | £300,000 (2019) |
| Flat 19 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £360,000 (2026) |
| Flat 20 Calla Court, Tranquil Lane, Harrow | Leasehold | 90 m² | £440,000 (2019) |
| Flat 21 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £390,000 (2020) |
| Flat 22 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £405,000 (2020) |
| Flat 23 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £410,000 (2019) |
| Flat 24 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £360,000 (2020) |
| Flat 25 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £360,000 (2026) |
| Flat 26 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £387,000 (2024) |
| Flat 27 Calla Court, Tranquil Lane, Harrow | Leasehold | 52 m² | £300,000 (2020) |
| Flat 28 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £390,000 (2020) |
| Flat 29 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £410,000 (2020) |
| Flat 30 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £405,000 (2020) |
| Flat 31 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £403,000 (2020) |
| Flat 32 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £408,000 (2019) |
| Flat 33 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £410,000 (2019) |
| Flat 34 Calla Court, Tranquil Lane, Harrow | Leasehold | 52 m² | £305,000 (2020) |
| Flat 35 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £415,000 (2019) |
| Flat 36 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £400,000 (2020) |
| Flat 37 Calla Court, Tranquil Lane, Harrow | Leasehold | 70 m² | £406,000 (2019) |
| Flat 38 Calla Court, Tranquil Lane, Harrow | Leasehold | 52 m² | £330,000 (2019) |
| Flat 39 Calla Court, Tranquil Lane, Harrow | Leasehold | 52 m² | £315,000 (2019) |
