| 3 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 4 First Avenue, Caerphilly | Freehold | 136 m² | £210,000 (2025) |
| 5, First Avenue, Caerphilly | Freehold | 107 m² | £160,000 (2021) |
| 6 First Avenue, Caerphilly | - | 102 m² | - |
| 7 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 8, First Avenue, Caerphilly | - | 100 m² | - |
| 9 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 11 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 13, First Avenue, Caerphilly | Freehold | 103 m² | £94,750 (2009) |
| 14 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 15 First Avenue, Caerphilly | Freehold | 99 m² | £190,000 (2025) |
| 16 First Avenue, Caerphilly | - | 107 m² | - |
| 18 First Avenue, Caerphilly | Freehold | 85 m² | £210,000 (2024) |
| 21 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 22 First Avenue, Caerphilly | Freehold | 79 m² | £180,000 (2026) |
| 23, First Avenue, Caerphilly | - | 101 m² | - |
| 24 First Avenue, Caerphilly | - | 82 m² | - |
| 25 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 26 First Avenue, Caerphilly | Freehold | 89 m² | £99,000 (2004) |
| 27, First Avenue, Caerphilly | Freehold | 96 m² | £130,000 (2018) |
| 28 First Avenue, Caerphilly | - | 87 m² | - |
| 29 First Avenue, Trecenydd, Caerphilly, Caerphilly | - | 108 m² | - |
| 30 First Avenue, Trecenydd, Caerphilly, Caerphilly | Freehold | 87 m² | £100,000 (2021) |
| 31, First Avenue, Caerphilly | - | 104 m² | - |
