| 1 St. Johns Place, Castle Street, Treorchy | - | 131 m² | - |
| 1, Castle Street, Treorchy | Freehold | 60 m² | £81,500 (2018) |
| 2 Castle Street, Cwmparc, Treorchy | Freehold | 63 m² | £55,000 (2021) |
| 2 St. Johns Place, Castle Street, Treorchy | - | 89 m² | - |
| 3 St. Johns Place, Castle Street, Treorchy | - | 87 m² | - |
| 3, Castle Street, Treorchy | Freehold | 65 m² | £66,000 (2013) |
| 4, Castle Street, Treorchy | Freehold | 63 m² | £11,000 (2002) |
| 6, Castle Street, Treorchy | - | 80 m² | - |
| 7, Castle Street, Treorchy | Freehold | 106 m² | £81,000 (2005) |
| 8, Castle Street, Treorchy | Freehold | 82 m² | £90,000 (2023) |
| 9, Castle Street, Treorchy | Freehold | 109 m² | £10,000 (2008) |
| 11 Castle Street, Treorchy | Freehold | 60 m² | £65,000 (2022) |
| 12 Castle Street, Treorchy | Freehold | 70 m² | £95,000 (2024) |
| 13, Castle Street, Treorchy | Freehold | 68 m² | £40,000 (2017) |
| 17, Castle Street, Treorchy | Freehold | 76 m² | £54,000 (2014) |
| 18 Castle Street, Treorchy | Freehold | 76 m² | £40,000 (2012) |
| 19, Castle Street, Treorchy | - | 67 m² | - |
| 22, Castle Street, Treorchy | Freehold | 90 m² | £68,000 (2015) |
| 24 Castle Street, Treorchy | Freehold | 70 m² | £16,500 (1999) |
| 25, Castle Street, Treorchy | Freehold | 70 m² | £54,000 (2017) |
| 26 Castle Street, Treorchy | Freehold | 72 m² | £73,000 (2024) |
| 27 Castle Street, Treorchy | Freehold | 65 m² | £72,000 (2024) |
| Brambleway, Castle Street, Treorchy | - | 190 m² | - |