| 1 Parc Yr Irfon, Builth Wells | Freehold | 78 m² | £260,000 (2025) |
| 2, Parc Yr Irfon, Builth Wells | Freehold | 105 m² | £205,000 (2016) |
| 3 Parc Yr Irfon, Builth Wells | Freehold | 185 m² | £235,000 (2015) |
| 4, Parc Yr Irfon, Builth Wells | Freehold | 111 m² | £265,000 (2013) |
| 8 Parc-Yr-Irfon, Builth Wells, Builth Wells | - | 73 m² | - |
| 9 Parc Yr Irfon, Builth Wells | - | 134 m² | - |
| 10 Parc Yr Irfon, Builth Wells | Leasehold | 85 m² | £260,000 (2022) |
| 15, Parc Yr Irfon, Builth Wells | - | 79 m² | - |
| 17 Parc Yr Irfon, Builth Wells | Freehold | 100 m² | £300,000 (2025) |
| 18 Parc Yr Irfon, Builth Wells | Freehold | 154 m² | £230,000 (2012) |
| 21, Parc Yr Irfon, Builth Wells | Freehold | 143 m² | £270,000 (2010) |
| 22, Parc Yr Irfon, Builth Wells | Freehold | 114 m² | £280,000 (2018) |
| 23 Parc-Yr-Irfon, Builth Wells, Builth Wells | Freehold | 155 m² | £380,000 (2021) |
| 24 Parc Yr Irfon, Builth Wells | Freehold | 158 m² | £170,500 (2003) |
| 25 Parc Yr Irfon, Builth Wells | Freehold | 90 m² | £256,000 (2024) |
| 26 Parc Yr Irfon, Builth Wells | Freehold | 56 m² | £160,000 (2013) |
| 27, Parc Yr Irfon, Builth Wells | Freehold | 98 m² | £218,000 (2019) |
| 31 Parc Yr Irfon, Builth Wells | Freehold | 111 m² | £200,000 (2016) |
| 32 Parc-Yr-Irfon, Builth Wells, Builth Wells | Freehold | 90 m² | £184,950 (2017) |
| 33, Parc Yr Irfon, Builth Wells | Freehold | 102 m² | £185,000 (2018) |
| 34, Parc Yr Irfon, Builth Wells | Freehold | 129 m² | £295,000 (2018) |
| 38 Parc-Yr-Irfon, Builth Wells, Builth Wells | Freehold | 121 m² | £275,000 (2021) |
| 39, Parc Yr Irfon, Builth Wells | Freehold | 157 m² | £290,000 (2015) |
| 41, Parc Yr Irfon, Builth Wells | Freehold | 76 m² | £267,500 (2021) |
| 42 Parc Yr Irfon, Builth Wells | Freehold | 78 m² | £258,000 (2023) |
| 43 Parc Yr Irfon, Builth Wells | - | 82 m² | - |
| 44 Parc Yr Irfon, Builth Wells | Freehold | 89 m² | £325,000 (2024) |
| 45 Parc Yr Irfon, Builth Wells | Freehold | 82 m² | £255,000 (2021) |
| 46, Parc Yr Irfon, Builth Wells | Freehold | 53 m² | £245,000 (2025) |
| 48 Parc Yr Irfon, Builth Wells | - | 119 m² | - |
| 49 Parc Yr Irfon, Builth Wells | Freehold | 113 m² | £420,000 (2023) |