| 1, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 3 Parc Y Castell, Builth Wells | Freehold | 85 m² | £100,000 (2005) |
| 4, Parc Y Castell, Builth Wells | - | 55 m² | - |
| 5 Parc Y Castell, Builth Wells | Freehold | 80 m² | £164,000 (2022) |
| 6, Parc Y Castell, Builth Wells | - | 70 m² | - |
| 7, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 8, Parc Y Castell, Builth Wells | - | 90 m² | - |
| 9, Parc Y Castell, Builth Wells | Freehold | 87 m² | £114,000 (2017) |
| 11, Parc Y Castell, Builth Wells | - | 75 m² | - |
| 12, Parc Y Castell, Builth Wells | Freehold | 109 m² | £96,000 (2014) |
| 13 Parc Y Castell, Builth Wells | Freehold | 68 m² | £90,000 (2007) |
| 14, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 15, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 16, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 17, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 18, Parc Y Castell, Builth Wells | - | 81 m² | - |
| 20, Parc Y Castell, Builth Wells | - | 70 m² | - |
| 21, Parc Y Castell, Builth Wells | - | 75 m² | - |
| 22 Parc Y Castell, Builth Wells | Freehold | 66 m² | £125,000 (2025) |
| 23, Parc Y Castell, Builth Wells | Freehold | 82 m² | £80,000 (2014) |
| 24, Parc Y Castell, Builth Wells | Freehold | 78 m² | £117,000 (2006) |
| 25, Parc Y Castell, Builth Wells | - | 75 m² | - |
| 26, Parc Y Castell, Builth Wells | Freehold | 68 m² | £115,000 (2020) |
| 27, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 28, Parc Y Castell, Builth Wells | - | 65 m² | - |
| 29 Parc Y Castell, Builth Wells | - | 82 m² | - |
| 30 Parc Y Castell, Builth Wells | - | 85 m² | - |
| 31 Parc Y Castell, Builth Wells | - | 66 m² | - |
| 32, Parc Y Castell, Builth Wells | - | 57 m² | - |
| 33, Parc Y Castell, Builth Wells | - | 57 m² | - |
