| 1, Llewellyn Avenue, Cardiff | Freehold | 113 m² | £30,950 (1997) |
| 2, Llewellyn Avenue, Cardiff | Freehold | 86 m² | £125,000 (2017) |
| 3, Llewellyn Avenue, Cardiff | - | 98 m² | - |
| 4, Llewellyn Avenue, Cardiff | Freehold | 89 m² | £110,000 (2017) |
| 5, Llewellyn Avenue, Cardiff | Freehold | 83 m² | £150,000 (2020) |
| 6, Llewellyn Avenue, Cardiff | - | 91 m² | - |
| 7, Llewellyn Avenue, Cardiff | - | 84 m² | - |
| 8, Llewellyn Avenue, Cardiff | - | 79 m² | - |
| 10, Llewellyn Avenue, Cardiff | - | 102 m² | - |
| 12, Llewellyn Avenue, Cardiff | - | 87 m² | - |
| 13, Llewellyn Avenue, Cardiff | - | 84 m² | - |
| 14 Llewellyn Avenue, Ely, Cardiff, Cardiff | Freehold | 98 m² | £226,000 (2024) |
| 15 Llewellyn Avenue, Cardiff | Freehold | 79 m² | £168,000 (2021) |
| 16 Llewellyn Avenue, Ely, Cardiff, Cardiff | - | 93 m² | - |
| 17 Llewellyn Avenue, Cardiff | Freehold | 95 m² | £208,000 (2025) |
| 18 Llewellyn Avenue, Cardiff | Freehold | 81 m² | £92,000 (2006) |
| 19 Llewellyn Avenue, Ely, Cardiff, Cardiff | - | 88 m² | - |
| 20, Llewellyn Avenue, Cardiff | Freehold | 85 m² | £101,000 (2008) |
| 22 Llewellyn Avenue, Ely, Ely East | - | 74 m² | - |
| 24 Llewellyn Avenue, Cardiff | Freehold | 88 m² | £198,000 (2026) |
| 26, Llewellyn Avenue, Cardiff | - | 88 m² | - |
| 28 Llewellyn Avenue, Cardiff | - | 100 m² | - |
| 30, Llewellyn Avenue, Cardiff | - | 71 m² | - |
