| 3 Mostyn Street, Aberdare | Freehold | 85 m² | £85,000 (2026) |
| 4, Mostyn Street, Aberdare | - | 60 m² | - |
| 6, Mostyn Street, Aberdare | Freehold | 101 m² | £35,000 (2002) |
| 8 Mostyn Street, Aberdare | Freehold | 75 m² | £38,000 (2017) |
| 9, Mostyn Street, Aberdare | Freehold | 58 m² | £55,000 (2015) |
| 10, Mostyn Street, Aberdare | Freehold | 72 m² | £62,500 (2015) |
| 12 Mostyn Street, Aberdare | Freehold | 76 m² | £115,000 (2026) |
| 13 Mostyn Street, Aberdare | Freehold | 76 m² | £112,500 (2026) |
| 15 Mostyn Street, Aberdare | Freehold | 72 m² | £90,000 (2021) |
| 16 Mostyn Street, Aberdare | Freehold | 78 m² | £72,500 (2022) |
| 17, Mostyn Street, Aberdare | Freehold | 73 m² | £76,995 (2016) |
| 18 Mostyn Street, Abercwmboi, Aberdare, Aberdare | Freehold | 67 m² | £18,000 (1999) |
| 19 Mostyn Street, Aberdare | Freehold | 78 m² | £137,000 (2025) |
| 21 Mostyn Street, Aberdare | - | 56 m² | - |
| 24 Mostyn Street, Aberdare | - | 58 m² | - |
| 25 Mostyn Street, Aberdare | - | 68 m² | - |
| 26 Mostyn Street, Aberdare | - | 56 m² | - |
| 29, Mostyn Street, Aberdare | Freehold | 73 m² | £42,000 (2014) |
| 30 Mostyn Street, Aberdare | Freehold | 62 m² | £58,000 (2017) |
| 31 Mostyn Street, Abercwmboi, Aberdare, Aberdare | Freehold | 74 m² | £65,000 (2019) |
| 32 Mostyn Street, Aberdare | Freehold | 65 m² | £90,000 (2026) |