| 1 Thomas Street, Trethomas, Caerphilly | Freehold | 80 m² | £137,500 (2024) |
| 2, Thomas Street, Trethomas, Caerphilly | Freehold | 82 m² | £85,000 (2014) |
| 4 Thomas Street, Trethomas, Caerphilly | Freehold | 67 m² | £150,000 (2022) |
| 5 Thomas Street, Trethomas, Caerphilly | Freehold | 89 m² | £120,000 (2020) |
| 6 Thomas Street, Trethomas, Caerphilly | Freehold | 82 m² | £75,500 (2014) |
| 7, Thomas Street, Trethomas, Caerphilly | Freehold | 79 m² | £113,000 (2016) |
| 8 Thomas Street, Trethomas, Caerphilly | Freehold | 93 m² | £147,000 (2025) |
| 9 Thomas Street, Trethomas, Caerphilly | Freehold | 83 m² | £135,000 (2022) |
| 10, Thomas Street, Trethomas, Caerphilly | Freehold | 86 m² | £103,000 (2016) |
| 11 Thomas Street, Trethomas, Caerphilly | Freehold | 82 m² | £155,000 (2025) |
| 13, Thomas Street, Trethomas, Caerphilly | Freehold | 83 m² | £41,000 (2001) |
| 15 Thomas Street, Trethomas, Trethomas | Freehold | 84 m² | £86,000 (2004) |
| 16 Thomas Street, Trethomas, Caerphilly | Freehold | 85 m² | £82,000 (2013) |
| 18 Thomas Street, Trethomas, Caerphilly | Freehold | 89 m² | £80,000 (2017) |
| 19, Thomas Street, Trethomas, Caerphilly | Freehold | 96 m² | £100,000 (2019) |
| 21 Thomas Street, Trethomas, Caerphilly | Freehold | 76 m² | £160,000 (2024) |
| 22 Thomas Street, Trethomas, Caerphilly | Freehold | 159 m² | £119,000 (2022) |
| 23, Thomas Street, Trethomas, Caerphilly | - | 86 m² | - |
| 25, Thomas Street, Trethomas, Caerphilly | Freehold | 83 m² | £73,000 (2003) |
| 27, Thomas Street, Trethomas, Caerphilly | Freehold | 93 m² | £100,000 (2016) |
| 29 Thomas Street, Trethomas, Caerphilly | Freehold | 77 m² | £159,000 (2024) |
| 30, Thomas Street, Trethomas, Caerphilly | Freehold | 82 m² | £168,650 (2024) |
| 32 Thomas Street, Trethomas, Caerphilly | - | 82 m² | - |
| 34 Thomas Street, Trethomas, Caerphilly | Freehold | 98 m² | £149,500 (2024) |
| 35 Thomas Street, Trethomas, Caerphilly | Freehold | 74 m² | £22,500 (1998) |
| 36, Thomas Street, Trethomas, Caerphilly | Freehold | 62 m² | £105,000 (2016) |
| 37, Thomas Street, Trethomas, Caerphilly | - | 97 m² | - |
| 38, Thomas Street, Trethomas, Caerphilly | Freehold | 84 m² | £120,000 (2021) |
| 40, Thomas Street, Trethomas, Caerphilly | Freehold | 83 m² | £118,000 (2016) |
| 43, Thomas Street, Trethomas, Caerphilly | Freehold | 92 m² | £114,000 (2007) |
| 44, Thomas Street, Trethomas, Caerphilly | - | 77 m² | - |
| 47, Thomas Street, Trethomas, Caerphilly | Freehold | 75 m² | £92,500 (2011) |
| 48 Thomas Street, Trethomas, Trethomas | Freehold | 90 m² | £180,000 (2024) |
| 49 Thomas Street, Trethomas, Trethomas | Freehold | 76 m² | £104,000 (2021) |
| 50, Thomas Street, Trethomas, Caerphilly | - | 96 m² | - |