| 1, Observatory Road, Blackburn | Leasehold | 62 m² | £120,000 (2020) |
| 3 Observatory Road, Blackburn | - | 66 m² | - |
| 4 Observatory Road, Blackburn | Leasehold | 100 m² | £183,000 (2022) |
| 6, Observatory Road, Blackburn | Leasehold | 95 m² | £170,000 (2024) |
| 7 Observatory Road, Blackburn | - | 68 m² | - |
| 8, Observatory Road, Blackburn | Freehold | 70 m² | £395 (2020) |
| 10, Observatory Road, Blackburn | Leasehold | 80 m² | £185,000 (2024) |
| 11, Observatory Road, Blackburn | Freehold | 74 m² | £143,000 (2022) |
| 12 Observatory Road, Blackburn | Leasehold | 74 m² | £81,000 (2015) |
| 13 Observatory Road, Blackburn | Leasehold | 74 m² | £110,000 (2025) |
| 14, Observatory Road, Blackburn | Leasehold | 70 m² | £108,000 (2019) |
| 15 Observatory Road, Blackburn | Leasehold | 73 m² | £162,000 (2024) |
| 16, Observatory Road, Blackburn | Leasehold | 97 m² | £117,000 (2019) |
| 17, Observatory Road, Blackburn | Leasehold | 67 m² | £80,000 (2021) |
| 18, Observatory Road, Blackburn | - | 96 m² | - |
| 20, Observatory Road, Blackburn | Freehold | 65 m² | £105,000 (2012) |
| 21, Observatory Road, Blackburn | Leasehold | 126 m² | £35,000 (1998) |
| 23 Observatory Road, Blackburn, Blackburn | Leasehold | 63 m² | £119,950 (2021) |
| 24 Observatory Road, Blackburn | Leasehold | 61 m² | £111,000 (2023) |
| 25, Observatory Road, Blackburn | Leasehold | 70 m² | £84,950 (2014) |
| 28 Observatory Road, Blackburn | - | 86 m² | - |
| 29, Observatory Road, Blackburn | Leasehold | 76 m² | £119,000 (2021) |
| 30, Observatory Road, Blackburn | - | 63 m² | - |
| 36, Observatory Road, Blackburn | - | 59 m² | - |
| 37 Observatory Road, Blackburn | Leasehold | 67 m² | £185,000 (2025) |
| 38 Observatory Road, Blackburn | Freehold | 63 m² | £93,000 (2006) |
| 39 Observatory Road, Blackburn | Leasehold | 69 m² | £106,000 (2005) |
| 40 Observatory Road, Blackburn | Leasehold | 63 m² | £175,999 (2025) |
| 41 Observatory Road, Blackburn | Leasehold | 65 m² | £112,500 (2007) |
| 46 Observatory Road, Blackburn | Leasehold | 73 m² | £190,000 (2024) |