| 1 Cae Castell, Builth Wells | Freehold | 127 m² | £310,000 (2024) |
| 2, Cae Castell, Builth Wells | Freehold | 113 m² | £176,200 (2015) |
| 3 Cae Castell, Builth Wells, Builth Wells | - | 168 m² | - |
| 4, Cae Castell, Builth Wells | Freehold | 86 m² | £150,000 (2013) |
| 5, Cae Castell, Builth Wells | Freehold | 126 m² | £165,000 (2012) |
| 7, Cae Castell, Builth Wells | Freehold | 96 m² | £180,000 (2013) |
| 8 Cae Castell, Builth Wells | Freehold | 97 m² | £305,000 (2025) |
| 9, Cae Castell, Builth Wells | Freehold | 90 m² | £300,000 (2023) |
| 10, Cae Castell, Builth Wells | Freehold | 93 m² | £157,500 (2011) |
| 11, Cae Castell, Builth Wells | Freehold | 81 m² | £156,000 (2011) |
| 12 Cae Castell, Builth Wells | - | 83 m² | - |
| 13 Cae Castell, Builth Wells | Freehold | 96 m² | £270,000 (2024) |
| 16 Cae Castell, Builth Wells | Freehold | 117 m² | £355,000 (2025) |
| 19 Cae Castell, Builth Wells | Freehold | 128 m² | £387,000 (2024) |
| 23, Cae Castell, Builth Wells | Freehold | 101 m² | £187,000 (2017) |
| 24 Cae Castell, Builth Wells | Freehold | 192 m² | £385,000 (2026) |
| 27, Cae Castell, Builth Wells | Freehold | 112 m² | £220,000 (2011) |
| 29, Cae Castell, Builth Wells | Freehold | 169 m² | £265,000 (2012) |
| Lansdowne, Cae Castell, Builth Wells | Freehold | 118 m² | £200,000 (2011) |
| Limegrove House, Cae Castell, Builth Wells | Freehold | 267 m² | £507,500 (2016) |