| 1 Heol Isaf, Nelson, Nelson | Freehold | 66 m² | £95,000 (2012) |
| 2, Heol Isaf, Nelson, Treharris | Freehold | 114 m² | £120,000 (2018) |
| 6 Heol Isaf, Nelson, Treharris | Freehold | 79 m² | £204,000 (2021) |
| 7 Heol Isaf, Nelson, Treharris | Freehold | 47 m² | £108,000 (2012) |
| 8, Heol Isaf, Nelson, Treharris | Freehold | 84 m² | £78,000 (2022) |
| 11, Heol Isaf, Nelson, Treharris | Freehold | 67 m² | £212,000 (2022) |
| 14, Heol Isaf, Nelson, Treharris | Freehold | 111 m² | £152,000 (2014) |
| 15 Heol Isaf, Nelson, Treharris | Freehold | 85 m² | £245,000 (2022) |
| 18 Heol Isaf, Nelson, Treharris | Freehold | 136 m² | £162,500 (2019) |
| 20, Heol Isaf, Nelson, Treharris | Freehold | 76 m² | £125,000 (2014) |
| 21, Heol Isaf, Nelson, Treharris | Freehold | 77 m² | £156,000 (2014) |
| 22 Heol Isaf, Nelson, Nelson | - | 84 m² | - |
| 24, Heol Isaf, Nelson, Treharris | Freehold | 83 m² | £240,000 (2026) |
| 25, Heol Isaf, Nelson, Treharris | - | 105 m² | - |
| 28 Heol Isaf, Nelson, Treharris | Freehold | 125 m² | £180,000 (2007) |
| 29, Heol Isaf, Nelson, Treharris | Freehold | 79 m² | £145,000 (2017) |
| 31 Heol Isaf, Nelson, Treharris | Freehold | 61 m² | £220,000 (2022) |
| 33, Heol Isaf, Nelson, Treharris | Freehold | 104 m² | £192,500 (2018) |