| 1 Llys Rhiwen, High Street, Deiniolen, Caernarfon | Freehold | 76 m² | £97,000 (2020) |
| 2 Llys Rhiwen, High Street, Deiniolen, Caernarfon | - | 82 m² | - |
| 3 Llys Rhiwen, High Street, Deiniolen, Caernarfon | - | 82 m² | - |
| 4 Llys Rhiwen, High Street, Deiniolen, Caernarfon | - | 72 m² | - |
| 18 High Street, Deiniolen, Caernarfon | - | 90 m² | - |
| 20, High Street, Deiniolen, Caernarfon | Freehold | 88 m² | £97,000 (2025) |
| 22 High Street, Deiniolen, Caernarfon | Freehold | 45 m² | £86,000 (2021) |
| 26, High Street, Deiniolen, Caernarfon | Freehold | 34 m² | £70,000 (2024) |
| 30, High Street, Deiniolen, Caernarfon | Freehold | 81 m² | £55,000 (2013) |
| 32 High Street, Deiniolen, Caernarfon | - | 92 m² | - |
| 34, High Street, Deiniolen, Caernarfon | Freehold | 64 m² | £10,500 (2000) |
| Arhosfa, High Street, Deiniolen, Caernarfon | Freehold | 66 m² | £110,000 (2021) |
| Arvon House, High Street, Deiniolen, Caernarfon | Freehold | 96 m² | £55,000 (2012) |
| Arvonia, High Street, Deiniolen, Caernarfon | Freehold | 78 m² | £99,000 (2023) |
| Caxton House, High Street, Caernarfon | Freehold | 82 m² | £12,500 (1999) |
| Chester House, High Street, Deiniolen, Caernarfon | Freehold | 103 m² | £80,000 (2021) |
| Craig Ddeiniol, High Street, Deiniolen, Caernarfon | - | 236 m² | - |
| Deiniol House, High Street, Deiniolen, Caernarfon | Freehold | 89 m² | £12,000 (2001) |
| Flat 1, London House, High Street, Deiniolen, Caernarfon | Freehold | 63 m² | £25,000 (1996) |
| Flat 2, The Old Post Office, High Street, Deiniolen, Caernarfon | - | 46 m² | - |
| Flat 3, The Old Post Office, High Street, Deiniolen, Caernarfon | - | 34 m² | - |
| Flat A, 34 High Street, Deiniolen | - | 79 m² | - |
| Flat B, 34 High Street, Deiniolen | - | 40 m² | - |
| Foelas, High Street, Deiniolen, Caernarfon | - | 96 m² | - |
| Gwylfa, High Street, Deiniolen, Caernarfon | Freehold | 58 m² | £130,000 (2025) |
| Hyfrydle, High Street, Deiniolen, Caernarfon | Freehold | 176 m² | £155,000 (2026) |
| London House, High Street, Deiniolen, Caernarfon | - | 115 m² | - |
| Manor House, High Street, Deiniolen, Caernarfon | Freehold | 75 m² | £134,000 (2023) |
| Preswylfa, High Street, Deiniolen, Deiniolen | - | 47 m² | - |
| Regent House, High Street, Deiniolen, Caernarfon | - | 144 m² | - |
| Rhiwenfa, High Street, Deiniolen, Caernarfon | Freehold | 50 m² | £58,000 (2013) |
| Shiloah, High Street, Deiniolen, Caernarfon | - | 192 m² | - |
| Trigfan, High Street, Deiniolen, Caernarfon | - | 60 m² | - |
| Ty Derwydd, High Street, Deiniolen, Caernarfon | - | 36 m² | - |
| Vaynol House, High Street, Deiniolen, Caernarfon | Freehold | 105 m² | £75,000 (2018) |
| Vyrnwy House, High Street, Deiniolen, Caernarfon | Freehold | 81 m² | £77,500 (2011) |
| Waenfro, High Street, Deiniolen, Caernarfon | Freehold | 111 m² | £80,500 (2017) |
| Wenfro, High Street, Deiniolen, Caernarfon | - | 111 m² | - |