Isallt, Caernarfon occupies a 74 m² plot as recorded by HM Land Registry.

Of the 37 other houses in this postcode, 30 have recorded plot sizes, and this one ranks as the 27th largest.

Isallt, Caernarfon has an Energy Performance Rating (EPC) of G. This is based on the most recent assessment, dated 13 May 2015.

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

Isallt, Caernarfon last changed hands on 10th December 2004, selling for £89,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

• Sold Dec 2004£89,000
• Sold Aug 1995£28,000

Land Registry records and our Estate Agent network show 32 sales of comparable properties within 2.5 kilometres of Isallt, Caernarfon since 2014.

Most recently, Talafon, Allt Goch, Caernarfon, LL55 4DW, a freehold house, sold at £175,000 on the 16th January 2026.

Read more about house prices in LL55.

• Sold Jan 2026£175,000 | 2 Bed HouseTalafon, Allt Goch, Caernarfon, LL55 4DWTalafon, Allt Goch, Caernarfon, LL55 4DW
• Sold Oct 2025£128,250 | 2 Bed House7 New Street, Caernarfon, LL55 4DE7 New Street, Caernarfon, LL55 4DE
• Sold Dec 2024£180,000 | 2 Bed House2, Penrhos, Station Road, Caernarfon, LL55 4AG2, Penrhos, Station Road, Caernarfon, LL55 4AG
• Sold Jun 2024£102,500 | 2 Bed HouseIsfryn Rallt, Caernarfon, LL55 3NTIsfryn Rallt, Caernarfon, LL55 3NT
• Sold Apr 2024£75,000 | 2 Bed House2 Bryn Hyfryd Terrace, Caernarfon, LL55 4DU2 Bryn Hyfryd Terrace, Caernarfon, LL55 4DU
• Sold Jan 2024£135,000 | 2 Bed HouseBryn Crwn, Caernarfon, LL55 4DLBryn Crwn, Caernarfon, LL55 4DL
• Sold Jan 2024£96,000 | 2 Bed House3 Bryn Hyfryd Terrace, Caernarfon, LL55 4DU3 Bryn Hyfryd Terrace, Caernarfon, LL55 4DU
• Sold Feb 2023£90,000 | 2 Bed HouseGelynen House, Caernarfon, LL55 4DEGelynen House, Caernarfon, LL55 4DE
• Sold May 2022£140,500 | 2 Bed HouseBron Eryri, Caernarfon, LL55 3NRBron Eryri, Caernarfon, LL55 3NR
• Sold Apr 2022£75,000 | 2 Bed HouseHafan, Caernarfon, LL55 3NRHafan, Caernarfon, LL55 3NR
• Sold Apr 2022£141,138 | 2 Bed HouseTre Waen Cottage, Caernarfon, LL55 3PPTre Waen Cottage, Caernarfon, LL55 3PP
• Sold Nov 2021£150,000 | 2 Bed House1 New Street, Caernarfon, LL55 4DE1 New Street, Caernarfon, LL55 4DE
• Sold Jul 2021£130,000 | 2 Bed HouseElidir View, Allt Goch, Caernarfon, LL55 4DWElidir View, Allt Goch, Caernarfon, LL55 4DW
• Sold Jun 2021£136,500 | 2 Bed House2 New Street, Caernarfon, LL55 4DE2 New Street, Caernarfon, LL55 4DE
• Sold Dec 2019£172,000 | 2 Bed HouseGors Bach, Caernarfon, LL55 3NRGors Bach, Caernarfon, LL55 3NR
• Sold Sep 2018£116,000 | 2 Bed House5, Madoc Terrace, Caernarfon, LL55 3PH5, Madoc Terrace, Caernarfon, LL55 3PH
• Sold May 2017£91,000 | 2 Bed House8 Dinorwic Terrace, Caernarfon, LL55 3DN8 Dinorwic Terrace, Caernarfon, LL55 3DN
• Sold Oct 2015£130,000 | 2 Bed HouseHaulfryn, Caernarfon, LL55 3NRHaulfryn, Caernarfon, LL55 3NR
• Sold Aug 2015£125,000 | 2 Bed HousePenrallt, Caernarfon, LL55 3NTPenrallt, Caernarfon, LL55 3NT
• Sold May 2014£65,000 | 2 Bed HouseToceja, Caernarfon, LL55 4DPToceja, Caernarfon, LL55 4DP

Our analysis of the public data ranks Isallt, Caernarfon as the 98th largest and the 88th most expensive of the 114 addresses on Brynrefail, Caernarfon, LL55.

Against the LL55 postcode district average, it is £63k less expensive than the typical property.

• Bangor (Gwynedd)

  |

  9.0 km away
• Llanfairpwll

  |

  9.5 km away
• Llanfairfechan

  |

  17.1 km away

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