Islwyn, Caernarfon occupies a 410 m² plot as recorded by HM Land Registry.

Of the 9 other houses in this postcode, 6 have recorded plot sizes, and this one ranks as the 4th largest.

Islwyn, Caernarfon has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 20 Sep 2016.

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

Land Registry records and our Estate Agent network show 20 sales of comparable properties within 2.8 kilometres of Islwyn, Caernarfon since 2007.

Most recently, Pen Y Gwylwyr, Caernarfon, LL54 7NT, a freehold house, sold at £325,000 on the 16th May 2025.

Read more about house prices in LL54.

• Sold May 2025£325,000 | 4 Bed HousePen Y Gwylwyr, Caernarfon, LL54 7NTPen Y Gwylwyr, Caernarfon, LL54 7NT
• Sold Apr 2025£535,000 | 5 Bed HouseGernant, Caernarfon, LL54 5UEGernant, Caernarfon, LL54 5UE
• Sold Jul 2024£395,000 | 4 Bed HouseMaes Y Coed, Caernarfon, LL54 7YGMaes Y Coed, Caernarfon, LL54 7YG
• Sold Aug 2023£385,000 | 4 Bed HouseBarn Cottage, Caernarfon, LL55 2TGBarn Cottage, Caernarfon, LL55 2TG
• Sold Nov 2022£430,000 | 4 Bed HousePen Y Bryn, Caernarfon, LL54 7AGPen Y Bryn, Caernarfon, LL54 7AG
• Sold Feb 2022£450,000 | 4 Bed HouseFrongoch, Caernarfon, LL54 7PFFrongoch, Caernarfon, LL54 7PF
• Sold Feb 2020£305,000 | 4 Bed House4, Cae'R Eglwys, Caernarfon, LL54 7LQ4, Cae'R Eglwys, Caernarfon, LL54 7LQ
• Sold Mar 2019£313,500 | 4 Bed HouseTyddyn Cae, Caernarfon, LL54 7PWTyddyn Cae, Caernarfon, LL54 7PW
• Sold Dec 2016£130,000 | 4 Bed HouseCae Hen, Caernarfon, LL54 7PNCae Hen, Caernarfon, LL54 7PN
• Sold Nov 2016£300,000 | 4 Bed HouseBryn Helen, Caernarfon, LL54 7AWBryn Helen, Caernarfon, LL54 7AW
• Sold Aug 2016£294,500 | 4 Bed HousePen Y Bont, Caernarfon, LL54 7EWPen Y Bont, Caernarfon, LL54 7EW
• Sold Feb 2016£290,000 | 4 Bed HouseMelin Llwyn Gwalch, Caernarfon, LL54 7EFMelin Llwyn Gwalch, Caernarfon, LL54 7EF
• Sold Feb 2016£310,000 | 4 Bed HouseTrem Arfon, Caernarfon, LL54 7NNTrem Arfon, Caernarfon, LL54 7NN
• Sold Jun 2015£400,000 | 5 Bed HouseBenar, Caernarfon, LL54 7YHBenar, Caernarfon, LL54 7YH
• Sold Mar 2012£160,000 | 5 Bed HouseThe Old Smithy, Caernarfon, LL54 7EFThe Old Smithy, Caernarfon, LL54 7EF
• Sold Jun 2010£300,000 | 4 Bed HouseCae Garw, Caernarfon, LL54 7NHCae Garw, Caernarfon, LL54 7NH
• Sold Apr 2009£340,000 | 4 Bed HouseTy Maen, Caernarfon, LL54 7NTTy Maen, Caernarfon, LL54 7NT
• Sold Oct 2008£338,000 | 4 Bed HouseHafod Owen, Caernarfon, LL54 7LDHafod Owen, Caernarfon, LL54 7LD
• Sold Jun 2007£350,000 | 4 Bed HouseBryn Hafod, Caernarfon, LL54 7DNBryn Hafod, Caernarfon, LL54 7DN
• Sold Apr 2007£290,000 | 4 Bed House2, Gerddi Benar, Caernarfon, LL54 7YJ2, Gerddi Benar, Caernarfon, LL54 7YJ

Our analysis of the public data ranks Islwyn, Caernarfon as the 32nd largest and the 30th most expensive of the 260 addresses on Rhostryfan, Caernarfon, LL54.

Against the LL54 postcode district average, it is £207k more expensive than the typical property.

• Llanfairpwll

  |

  14.4 km away
• Bodorgan

  |

  16.2 km away
• Bangor (Gwynedd)

  |

  16.3 km away

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