Trelyn, Caernarfon has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 18 Sep 2014.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (oil).

Trelyn, Caernarfon last changed hands on 22nd July 2022, selling for £158,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has risen by 39.5% since July 2022.

• Sold Jul 2022£158,000

Land Registry records and our Estate Agent network show 52 sales of comparable properties within 3.5 kilometres of Trelyn, Caernarfon since 2011.

Most recently, 4, Bala Deulyn Terrace, Caernarfon, LL54 6BL, a freehold house, sold at £152,000 on the 3rd February 2026.

Read more about house prices in LL54.

• Sold Feb 2026£152,000 | 3 Bed House4, Bala Deulyn Terrace, Caernarfon, LL54 6BL4, Bala Deulyn Terrace, Caernarfon, LL54 6BL
• Sold Dec 2025£165,000 | 3 Bed House2 Eryri Terrace, Caernarfon, LL54 7BL2 Eryri Terrace, Caernarfon, LL54 7BL
• Sold Sep 2025£165,000 | 3 Bed House3, Blue Bell, Caernarfon, LL54 6LG3, Blue Bell, Caernarfon, LL54 6LG
• Sold Jan 2025£149,000 | 3 Bed HouseCriafol, Caernarfon, LL54 7PUCriafol, Caernarfon, LL54 7PU
• Sold Dec 2023£110,000 | 3 Bed HouseFron Fair, Caernarfon, LL54 7SGFron Fair, Caernarfon, LL54 7SG
• Sold Dec 2023£180,000 | 3 Bed House2, Bryn Twrog Terrace, Caernarfon, LL54 7BA2, Bryn Twrog Terrace, Caernarfon, LL54 7BA
• Sold May 2023£165,000 | 3 Bed House4 Trallwyn Terrace, Caernarfon, LL54 7SB4 Trallwyn Terrace, Caernarfon, LL54 7SB
• Sold Dec 2022£140,000 | 2 Bed House2 Trallwyn Terrace, Caernarfon, LL54 7SB2 Trallwyn Terrace, Caernarfon, LL54 7SB
• Sold Aug 2022£189,000 | 3 Bed House7, Victoria Terrace, Caernarfon, LL54 6BP7, Victoria Terrace, Caernarfon, LL54 6BP
• Sold May 2022£175,000 | 3 Bed HouseFair View, Caernarfon, LL54 7SGFair View, Caernarfon, LL54 7SG
• Sold Dec 2021£170,000 | 3 Bed House4, Kinmel Terrace, Caernarfon, LL54 6BN4, Kinmel Terrace, Caernarfon, LL54 6BN
• Sold Dec 2021£375,000 | 3 Bed HouseTyddyn Sais, Caernarfon, LL54 7PTTyddyn Sais, Caernarfon, LL54 7PT
• Sold Oct 2021£135,000 | 2 Bed House3 Bron Eryri, Caernarfon, LL54 7BG3 Bron Eryri, Caernarfon, LL54 7BG
• Sold Oct 2021£140,000 | 3 Bed House17, Nantlle Road, Caernarfon, LL54 6AE17, Nantlle Road, Caernarfon, LL54 6AE
• Sold Nov 2018£139,950 | 3 Bed House16, Victoria Terrace, Caernarfon, LL54 6BP16, Victoria Terrace, Caernarfon, LL54 6BP
• Sold Aug 2018£79,950 | 3 Bed House1 Nantlle Houses, Nantlle Road, Caernarfon, LL54 6AF1 Nantlle Houses, Nantlle Road, Caernarfon, LL54 6AF
• Sold Aug 2018£90,000 | 3 Bed HouseGlan Aber, Caernarfon, LL54 7BGGlan Aber, Caernarfon, LL54 7BG
• Sold Jul 2017£73,500 | 3 Bed House5, Blue Bell, Caernarfon, LL54 6LG5, Blue Bell, Caernarfon, LL54 6LG
• Sold Sep 2011£100,000 | 3 Bed HouseCae Ffynnon, Caernarfon, LL54 7AFCae Ffynnon, Caernarfon, LL54 7AF
• Sold Aug 2011£100,000 | 3 Bed HouseGlanrafon Canol, Caernarfon, LL54 7AHGlanrafon Canol, Caernarfon, LL54 7AH

Our analysis of the public data ranks Trelyn, Caernarfon as the 104th largest and the 88th most expensive of the 147 addresses on Upper Llandwrog, Caernarfon, LL54.

Against the LL54 postcode district average, it is £51k less expensive than the typical property.

• Porthmadog

  |

  16.5 km away
• Criccieth

  |

  16.7 km away
• Llanfairpwll

  |

  17.0 km away

Environment Agency data suggests this area has a Very Low risk of flooding.