| 1 Castle Street, Penrhyndeudraeth | Freehold | 70 m² | £130,000 (2022) |
| 3, Castle Street, Penrhyndeudraeth | Freehold | 65 m² | £83,000 (2007) |
| 4 Castle Street, A487(T) From Bro Llewelyn To A4085 Junction, Penrhyndeudraeth, Penrhyndeudraeth | Freehold | 81 m² | £24,000 (1995) |
| 5 Castle Street, Penrhyndeudraeth | Freehold | 100 m² | £60,000 (2003) |
| 6, Castle Street, Penrhyndeudraeth | Freehold | 59 m² | £82,000 (2015) |
| Adwy Ddu Isaf, Castle Street, Penrhyndeudraeth | Freehold | 116 m² | £310,000 (2022) |
| Adwy Ddu Smithy, Castle Street, Penrhyndeudraeth | Freehold | 82 m² | £225,000 (2024) |
| Cambria, Castle St, Penrhyndeudraeth | - | 190 m² | - |
| Flat 1, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 61 m² | - |
| Flat 2 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 36 m² | - |
| Flat 3, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 61 m² | - |
| Flat 4 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 31 m² | - |
| Flat 5, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 41 m² | - |
| Flat 6, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 48 m² | - |
| Flat 7, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 42 m² | - |
| Flat 8 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 48 m² | - |
| Flat 9 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 41 m² | - |
| Flat 10 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 31 m² | - |
| Flat 11, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 61 m² | - |
| Flat 12 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 61 m² | - |
| Flat 15 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 48 m² | - |
| Flat 16 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 48 m² | - |
| Flat 17 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 42 m² | - |
| Flat 18 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 31 m² | - |
| Flat 19 Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 31 m² | - |
| Flat 21, Bro Llewelyn, Castle Street, Penrhyndeudraeth | - | 83 m² | - |
| Flat, Cambria Pharmacy, A487(T) From Bro Llewelyn To A4085 Junction, Penrhyndeudraeth | - | 89 m² | - |
| Hen Festri, Castle Street, Penrhyndeudraeth | Freehold | 290 m² | £210,000 (2018) |
| Llanerch, 2 Castle Street, A487(T) From Bro Llewelyn To A4085 Junction, Penrhyndeudraeth | Freehold | 86 m² | £140,000 (2021) |
