| 1 High Street, Penygroes, Caernarfon | Freehold | 143 m² | £74,500 (2014) |
| 2, High Street, Penygroes, Caernarfon | Freehold | 80 m² | £185,000 (2023) |
| 6, High Street, Penygroes, Caernarfon | Freehold | 80 m² | £115,000 (2017) |
| 7, High Street, Penygroes, Caernarfon | Freehold | 86 m² | £92,500 (2007) |
| 9, High Street, Penygroes, Caernarfon | - | 136 m² | - |
| 11 High Street, Penygroes, Caernarfon | Freehold | 127 m² | £81,000 (2019) |
| 19 High Street, Penygroes, Caernarfon | - | 500 m² | - |
| 21, High Street, Penygroes, Caernarfon | Freehold | 76 m² | £34,000 (2001) |
| 22, High Street, Penygroes, Caernarfon | - | 39 m² | - |
| 23, High Street, Penygroes, Caernarfon | Freehold | 52 m² | £65,000 (2018) |
| 25 High Street, Penygroes, Caernarfon | - | 49 m² | - |
| 27, High Street, Penygroes, Caernarfon | Freehold | 49 m² | £43,000 (2003) |
| 29 High Street, Penygroes, Caernarfon | Freehold | 50 m² | £80,000 (2026) |
| 31, High Street, Penygroes, Caernarfon | Freehold | 62 m² | £72,500 (2016) |
| 32 High Street, Penygroes, Caernarfon | - | 100 m² | - |
| 33, High Street, Penygroes, Caernarfon | - | 53 m² | - |
| 34, High Street, Penygroes, Caernarfon | - | 50 m² | - |
| 34A High Street, Penygroes, Caernarfon | - | 55 m² | - |
| 34B High Street, Penygroes, Caernarfon | - | 37 m² | - |
| 35, High Street, Penygroes, Caernarfon | Freehold | 59 m² | £70,000 (2018) |
| 36 High Street, Penygroes, Caernarfon | - | 56 m² | - |
| 37, High Street, Penygroes, Caernarfon | Freehold | 59 m² | £88,000 (2020) |
| 38 High Street, Penygroes, Caernarfon | Freehold | 84 m² | £175,000 (2024) |
| 39, High Street, Penygroes, Caernarfon | Freehold | 48 m² | £103,000 (2026) |
| 41, High Street, Penygroes, Caernarfon | Freehold | 55 m² | £51,000 (2018) |
| 42, High Street, Penygroes, Caernarfon | Freehold | 90 m² | £80,000 (2015) |
| 43, High Street, Penygroes, Caernarfon | Freehold | 67 m² | £74,950 (2021) |
| 45 High Street, Penygroes, Caernarfon | Freehold | 62 m² | £85,000 (2024) |
| 47, High Street, Penygroes, Caernarfon | Freehold | 51 m² | £54,000 (2015) |
| 49, High Street, Penygroes, Caernarfon | - | 59 m² | - |
| 51, High Street, Penygroes, Caernarfon | Freehold | 57 m² | £55,500 (2012) |
| 53 High Street, Penygroes, Caernarfon | Freehold | 50 m² | £118,000 (2024) |
| 57 High Street, Penygroes, Caernarfon | Freehold | 71 m² | £98,500 (2022) |
| 59, High Street, Penygroes, Caernarfon | Freehold | 70 m² | £42,500 (2023) |
| 63, High Street, Penygroes, Caernarfon | Freehold | 91 m² | £56,000 (2011) |
| 65, High Street, Penygroes, Caernarfon | Freehold | 79 m² | £24,500 (1997) |
| 71, High Street, Penygroes, Caernarfon | Freehold | 93 m² | £70,000 (2019) |
| 73 High Street, Penygroes, Caernarfon | Freehold | 133 m² | £300,000 (2022) |
| 75 High Street, Penygroes, Caernarfon | Freehold | 91 m² | £130,000 (2024) |
| 79, High Street, Penygroes, Caernarfon | Freehold | 81 m² | £120,000 (2021) |
| Capel Bethel Vestry, High Street, Penygroes, Caernarfon | Freehold | 275 m² | £124,950 (2011) |
| Flat 1, 3-5 High Street, Penygroes, Caernarfon | Freehold | 94 m² | £175,000 (2018) |
| Monfa, High Street, Penygroes, Caernarfon | - | 76 m² | - |
| Montrose, High Street, Penygroes, Caernarfon | Freehold | 99 m² | £190,000 (2022) |
| Moorings, High Street, Penygroes, Caernarfon | Freehold | 117 m² | £150,000 (2024) |