| 1 Duncan Close, St. Mellons, Cardiff | Freehold | 70 m² | £240,000 (2025) |
| 2, Duncan Close, St. Mellons, Cardiff | Freehold | 69 m² | £240,000 (2026) |
| 3, Duncan Close, St. Mellons, Cardiff | Freehold | 57 m² | £188,000 (2024) |
| 4, Duncan Close, St. Mellons, Cardiff | Freehold | 59 m² | £165,000 (2019) |
| 5, Duncan Close, St. Mellons, Cardiff | Freehold | 69 m² | £170,000 (2017) |
| 6 Duncan Close, St. Mellons, Cardiff | Freehold | 75 m² | £160,000 (2016) |
| 8, Duncan Close, St. Mellons, Cardiff | Freehold | 71 m² | £179,000 (2019) |
| 10 Duncan Close, St. Mellons, Cardiff | Freehold | 69 m² | £265,000 (2025) |
| 11 Duncan Close, St. Mellons, Cardiff | Freehold | 55 m² | £210,000 (2022) |
| 12 Duncan Close, St. Mellons, Cardiff | Freehold | 57 m² | £130,000 (2014) |
| 17 Duncan Close, St. Mellons, Cardiff | Freehold | 66 m² | £133,000 (2016) |
| 18, Duncan Close, St. Mellons, Cardiff | Freehold | 68 m² | £145,500 (2014) |
| 19, Duncan Close, St. Mellons, Cardiff | Freehold | 76 m² | £212,500 (2024) |
| 20 Duncan Close, St. Mellons, Cardiff | Freehold | 56 m² | £112,000 (2005) |
| 21 Duncan Close, Rumney, Cardiff, Cardiff | Freehold | 56 m² | £166,000 (2021) |
| 22, Duncan Close, St. Mellons, Cardiff | - | 56 m² | - |
| 23 Duncan Close, St. Mellons, Cardiff | Freehold | 81 m² | £245,000 (2025) |
| 26, Duncan Close, St. Mellons, Cardiff | Freehold | 69 m² | £183,000 (2019) |