| 1, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 1A Tan Yr Efail, Caergybi, Ynys Mon | - | 74 m² | - |
| 2 Tan Yr Efail, Caergybi, Ynys Mon | - | 65 m² | - |
| 3 Tan Yr Efail, Caergybi, Ynys Mon | - | 79 m² | - |
| 4 Tan Yr Efail, Holyhead, Holyhead | Freehold | 75 m² | £112,000 (2022) |
| 5 Tan Yr Efail, Caergybi, Ynys Mon | Freehold | 63 m² | £89,950 (2007) |
| 6, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 7, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 8 Tan Yr Efail, Caergybi, Ynys Mon | - | 162 m² | - |
| 9 Tan Yr Efail, Caergybi, Ynys Mon | - | 121 m² | - |
| 10, Tan Yr Efail, Holyhead | - | 81 m² | - |
| 11 Tan Yr Efail, Caergybi, Ynys Mon | - | 76 m² | - |
| 12, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 13 Tan Yr Efail, Caergybi, Ynys Mon | - | 64 m² | - |
| 14 Tan Yr Efail, Caergybi, Ynys Mon | - | 68 m² | - |
| 15 Tan Yr Efail, Caergybi, Ynys Mon | - | 65 m² | - |
| 16 Tan Yr Efail, Caergybi, Ynys Mon | - | 65 m² | - |
| 17 Tan Yr Efail, Caergybi, Ynys Mon | - | 68 m² | - |
| 18, Tan Yr Efail, Holyhead | - | 80 m² | - |
| 37 Tan Yr Efail, Holyhead | - | 92 m² | - |
| 47 Tan Yr Efail, Holyhead | - | 92 m² | - |
| 69 Tan Yr Efail, Caergybi, Ynys Mon | - | 65 m² | - |
| 70, Tan Yr Efail, Holyhead | Freehold | 79 m² | £23,430 (2004) |
| 72 Tan Yr Efail, Caergybi, Ynys Mon | - | 61 m² | - |
| 73 Tan Yr Efail, Holyhead | Freehold | 74 m² | £95,000 (2024) |
| 74 Tan Yr Efail, Holyhead | Freehold | 69 m² | £120,000 (2022) |
| 76 Tan Yr Efail, Caergybi, Ynys Mon | - | 65 m² | - |
| 77 Tan Yr Efail, Caergybi, Ynys Mon | - | 63 m² | - |
| 78, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 79 Tan Yr Efail, Caergybi, Ynys Mon | - | 74 m² | - |
| 80 Tan Yr Efail, Caergybi, Ynys Mon | - | 64 m² | - |
| 81 Tan Yr Efail, Caergybi, Ynys Mon | - | 64 m² | - |
| 82, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 83 Tan Yr Efail, Caergybi, Ynys Mon | - | 62 m² | - |
| 84 Tan Yr Efail, Holyhead | Freehold | 81 m² | £35,000 (2002) |
| 85 Tan Yr Efail, Caergybi, Ynys Mon | - | 73 m² | - |
| 86, Tan Yr Efail, Holyhead | - | 67 m² | - |
| 87 Tan Yr Efail, Caergybi, Ynys Mon | - | 74 m² | - |
| 88 Tan Yr Efail, Caergybi, Ynys Mon | - | 74 m² | - |
| 89 Tan Yr Efail, Caergybi, Ynys Mon | - | 78 m² | - |
| 90, Tan Yr Efail, Holyhead | Freehold | 68 m² | £95,000 (2020) |
| 92 Tan Yr Efail, Caergybi, Ynys Mon | - | 78 m² | - |
| 93 Tan Yr Efail, Caergybi, Ynys Mon | - | 56 m² | - |
| 94 Tan Yr Efail, Caergybi, Ynys Mon | - | 59 m² | - |
| 95 Tan Yr Efail, Caergybi, Ynys Mon | - | 64 m² | - |
| 96, Tan Yr Efail, Holyhead | Freehold | 66 m² | £25,000 (1996) |
| 97 Tan Yr Efail, Caergybi, Ynys Mon | - | 45 m² | - |
| 98 Tan Yr Efail, Holyhead | - | 49 m² | - |