| 1, Castleton Avenue, Treherbert, Treorchy | Freehold | 128 m² | £75,000 (2011) |
| 3 Castleton Avenue, Treherbert, Treorchy | Freehold | 108 m² | £130,000 (2022) |
| 4, Castleton Avenue, Treherbert, Treorchy | Freehold | 126 m² | £120,000 (2010) |
| 5, Castleton Avenue, Treherbert, Treorchy | - | 116 m² | - |
| 7, Castleton Avenue, Treherbert, Treorchy | Freehold | 98 m² | £99,950 (2018) |
| 8, Castleton Avenue, Treherbert, Treorchy | Freehold | 68 m² | £85,000 (2014) |
| 9, Castleton Avenue, Treherbert, Treorchy | Freehold | 154 m² | £87,000 (2010) |
| 10, Castleton Avenue, Treherbert, Treorchy | Freehold | 106 m² | £73,000 (2015) |
| 11, Castleton Avenue, Treherbert, Treorchy | - | 139 m² | - |
| 12, Castleton Avenue, Treherbert, Treorchy | Freehold | 116 m² | £82,800 (2013) |
| 13, Castleton Avenue, Treherbert, Treorchy | Freehold | 118 m² | £55,500 (1999) |
| 14 Castleton Avenue, Tynewydd, Rhondda Cynon Taff | Freehold | 116 m² | £185,000 (2025) |
| 15, Castleton Avenue, Treherbert, Treorchy | Freehold | 79 m² | £72,000 (2022) |
| 16 Castleton Avenue, Treherbert, Treorchy | - | 77 m² | - |
| 17, Castleton Avenue, Treherbert, Treorchy | - | 85 m² | - |
| 18 Castleton Avenue, Treherbert, Treorchy | - | 82 m² | - |
| 20 Castleton Avenue, Treherbert, Treorchy | - | 77 m² | - |
| 21, Castleton Avenue, Treherbert, Treorchy | - | 80 m² | - |
| 23 Castleton Avenue, Treherbert, Treorchy | - | 101 m² | - |
| 24 Castleton Avenue, Treherbert, Treorchy | - | 82 m² | - |
| 25 Castleton Avenue, Treherbert, Treorchy | Freehold | 78 m² | £130,000 (2025) |
| 26, Castleton Avenue, Treherbert, Treorchy | Freehold | 88 m² | £125,000 (2022) |
| Fernhill, Castleton Avenue, Tynewydd, Treherbert | - | 363 m² | - |
| Plasnewydd, Castleton Avenue, Treherbert, Treorchy | - | 299 m² | - |
