| 1, Castle Road, Builth Wells | Freehold | 108 m² | £170,000 (2024) |
| 2 Tarrent Close, Castle Road, Builth Wells | - | 101 m² | - |
| 4, Castle Road, Builth Wells | Freehold | 88 m² | £130,000 (2017) |
| 8 Castle Road, Builth Wells | Freehold | 102 m² | £210,000 (2022) |
| 9, Castle Road, Builth Wells | - | 65 m² | - |
| 11A, Castle Road, Builth Wells | Freehold | 111 m² | £105,000 (2015) |
| 12 Castle Road, Builth Wells | Freehold | 68 m² | £100,000 (2012) |
| 14, Castle Road, Builth Wells | - | 118 m² | - |
| 21, Castle Road, Builth Wells | Freehold | 142 m² | £40,000 (2002) |
| 23 Castle Road, Builth Wells | - | 107 m² | - |
| 24 Castle Road, Builth Wells | - | 73 m² | - |
| 25 Castle Road, Builth Wells | Freehold | 86 m² | £109,000 (2012) |
| 26, Castle Road, Builth Wells | - | 70 m² | - |
| 29 Castle Road, Builth Wells | Freehold | 93 m² | £250,000 (2024) |
| 30, Castle Road, Builth Wells | - | 69 m² | - |
| 31 Castle Road, Builth Wells | Freehold | 68 m² | £172,500 (2024) |
| 37 Castle Road, Builth Wells | - | 60 m² | - |
| 39, Castle Road, Builth Wells | Freehold | 57 m² | £73,500 (2016) |
| 41, Castle Road, Builth Wells | Freehold | 58 m² | £94,000 (2012) |
| 45, Castle Road, Builth Wells | Freehold | 72 m² | £100,000 (2021) |
| 47 Castle Road, Builth Wells, Builth Wells | Freehold | 34 m² | £110,000 (2020) |
| Caetansy, Castle Road, Builth Wells | Freehold | 95 m² | £310,000 (2024) |
| Flat 1 Bryn Epynt, 6, Castle Road, Builth Wells | - | 49 m² | - |
| Flat 2 Bryn Epynt, 6, Castle Road, Builth Wells | - | 69 m² | - |
| Flat 3 Bryn Epynt, 6, Castle Road, Builth Wells | - | 29 m² | - |
| Flat 4 Bryn Epynt, 6, Castle Road, Builth Wells | - | 31 m² | - |
| Flat 5 Bryn Epynt, 6, Castle Road, Builth Wells | - | 37 m² | - |
