| 1 Mary Street, Twynyrodyn, Merthyr Tydfil, Merthyr Tydfil | Freehold | 58 m² | £73,000 (2021) |
| 1A, Mary Street, Merthyr Tydfil | - | 66 m² | - |
| 2, Mary Street, Merthyr Tydfil | Freehold | 66 m² | £45,000 (2018) |
| 3 Mary Street, Merthyr Tydfil | Freehold | 71 m² | £70,000 (2014) |
| 6, Mary Street, Merthyr Tydfil | Freehold | 63 m² | £70,000 (2020) |
| 7 Mary Street, Merthyr Tydfil | - | 59 m² | - |
| 8 Mary Street, Merthyr Tydfil | Freehold | 64 m² | £65,000 (2022) |
| 9 Mary Street, Merthyr Tydfil | Freehold | 68 m² | £95,000 (2023) |
| 10, Mary Street, Merthyr Tydfil | - | 60 m² | - |
| 11 Mary Street, Merthyr Tydfil | Freehold | 73 m² | £90,000 (2025) |
| 12, Mary Street, Merthyr Tydfil | - | 94 m² | - |
| 13 Mary Street, Merthyr Tydfil | Freehold | 89 m² | £138,000 (2025) |
| 14, Mary Street, Merthyr Tydfil | Freehold | 91 m² | £84,000 (2016) |
| 15, Mary Street, Merthyr Tydfil | Freehold | 80 m² | £81,000 (2007) |
| 17, Mary Street, Merthyr Tydfil | Freehold | 76 m² | £172,000 (2025) |
| 18, Mary Street, Merthyr Tydfil | Freehold | 76 m² | £68,500 (2021) |
| 40 Mary Street, Merthyr Tydfil | Freehold | 100 m² | £185,000 (2024) |
| 41, Mary Street, Merthyr Tydfil | Freehold | 68 m² | £79,995 (2022) |
| 42 Mary Street, Twynyrodyn, Merthyr Tydfil, Merthyr Tydfil | Freehold | 63 m² | £75,000 (2005) |
| 43 Mary Street, Merthyr Tydfil | - | 66 m² | - |
| 48, Mary Street, Merthyr Tydfil | Freehold | 80 m² | £60,000 (2020) |
| 49, Mary Street, Merthyr Tydfil | Freehold | 84 m² | £43,000 (2017) |
| 50, Mary Street, Merthyr Tydfil | - | 94 m² | - |
| 52, Mary Street, Merthyr Tydfil | Freehold | 151 m² | £82,000 (2017) |