| 33 Heol Trecastell, Caerphilly | Freehold | 103 m² | £90,500 (2010) |
| 35, Heol Trecastell, Caerphilly | Freehold | 76 m² | £155,000 (2015) |
| 36 Heol Trecastell, Caerphilly | - | 73 m² | - |
| 37 Heol Trecastell, Caerphilly, Caerphilly | Freehold | 91 m² | £217,500 (2023) |
| 39 Heol Trecastell, Caerphilly | Freehold | 85 m² | £175,000 (2021) |
| 41, Heol Trecastell, Caerphilly | Freehold | 78 m² | £112,000 (2014) |
| 42 Heol Trecastell, Caerphilly, Caerphilly | Freehold | 90 m² | £200,000 (2021) |
| 43, Heol Trecastell, Caerphilly | Freehold | 77 m² | £195,000 (2021) |
| 44, Heol Trecastell, Caerphilly | Freehold | 78 m² | £202,000 (2021) |
| 45, Heol Trecastell, Caerphilly | Freehold | 78 m² | £114,950 (2014) |
| 48 Heol Trecastell, Caerphilly | Freehold | 118 m² | £302,500 (2025) |
| Trecastell Flats, 17, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 18, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 19, Heol Trecastell, Caerphilly | - | 47 m² | - |
| Trecastell Flats, 20, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 21, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 22, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 23 Heol Trecastell, Caerphilly | - | 42 m² | - |
| Trecastell Flats, 24 Heol Trecastell, Caerphilly, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 25 Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 26, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 27, Heol Trecastell, Caerphilly | - | 47 m² | - |
| Trecastell Flats, 28, Heol Trecastell, Caerphilly | - | 47 m² | - |
| Trecastell Flats, 29, Heol Trecastell, Caerphilly | - | 46 m² | - |
| Trecastell Flats, 30, Heol Trecastell, Caerphilly | - | 69 m² | - |
| Trecastell Flats, 31, Heol Trecastell, Caerphilly | - | 47 m² | - |
| Trecastell Flats, 32, Heol Trecastell, Caerphilly | - | 47 m² | - |
