| 4A-6A Middle Street, Blackhall Colliery, Hartlepool | - | 109 m² | - |
| 14B Middle Street, Blackhall Colliery, Hartlepool | - | 74 m² | - |
| 20A, Middle Street, Blackhall Colliery, Hartlepool | Freehold | 92 m² | £65,100 (2004) |
| 22A, Middle Street, Blackhall Colliery, Hartlepool | - | 59 m² | - |
| 24A, Middle St, Blackhall, Hartlepool | - | 60 m² | - |
| 26A Middle Street, Blackhall Colliery | - | 80 m² | - |
| 30A, Middle Street, Blackhall Colliery, Hartlepool | Freehold | 61 m² | £60,000 (2021) |
| 32A Middle Street, Blackhall Colliery, Hartlepool | Freehold | 104 m² | £85,000 (2003) |
| 34A Middle Street, Blackhall Colliery, Hartlepool | Freehold | 84 m² | £85,000 (2003) |
| 40A, Middle Street, Blackhall Colliery, Hartlepool | - | 53 m² | - |
| 42, Middle Street, Blackhall Colliery, Hartlepool | - | 51 m² | - |
| 42A Middle Street, Blackhall Colliery, Hartlepool | - | 66 m² | - |
| 44A Middle Street, Blackhall Colliery, Hartlepool | - | 87 m² | - |
| 46 Middle Street, Blackhall Colliery | Freehold | 133 m² | £140,000 (2006) |
| 48A Middle Street, Blackhall Colliery, Blackhall Colliery | Freehold | 56 m² | £180,000 (2025) |
| 49A Middle Street, Blackhall Colliery, Blackhall Colliery | Freehold | 82 m² | £19,000 (1999) |
| 50A Middle Street, Blackhall Colliery, Hartlepool | Freehold | 65 m² | £180,000 (2025) |
| 52A Middle Street, Blackhall Colliery, Hartlepool | Leasehold | 57 m² | £480,000 (2025) |
| 54A Middle Street, Blackhall Colliery, Hartlepool | Leasehold | 59 m² | £480,000 (2025) |
| 56A, Middle Street, Blackhall Colliery, Hartlepool | Leasehold | 57 m² | £480,000 (2025) |
| 58A Middle Street, Blackhall Colliery, Hartlepool | Leasehold | 85 m² | £480,000 (2025) |
| 59A Middle Street, Blackhall Colliery, Blackhall Colliery | - | 57 m² | - |
| 60A Middle Street, Blackhall Colliery, Hartlepool | - | 56 m² | - |
| 61A Middle Street, Blackhall Colliery, Blackhall Colliery | Freehold | 57 m² | £65,950 (2007) |
| 62A, Middle Street, Blackhall Colliery, Hartlepool | - | 41 m² | - |
| 66A Middle Street, Blackhall Colliery, Hartlepool | - | 98 m² | - |
| Flat, 8 Middle Street, Blackhall Colliery | - | 59 m² | - |
| Flat, 36 Middle Street, Blackhall Colliery, Hartlepool | - | 45 m² | - |
| The Flat, 16 Middle Street, Blackhall Colliery | - | 70 m² | - |
| The Flat, 24 Middle Street, Blackhall Colliery, Hartlepool | Freehold | 62 m² | £75,000 (2015) |