19, Lon Helen, Caernarfon occupies a 212 m² plot as recorded by HM Land Registry.

Of the 14 other houses in this postcode, 4 have recorded plot sizes, and this one ranks as the 3rd largest.

19, Lon Helen, Caernarfon has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 15 Feb 2017.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Land Registry records and our Estate Agent network show 96 sales of comparable properties within 590 metres of 19, Lon Helen, Caernarfon since 2010.

Most recently, 12, Segontium Road South, Caernarfon, LL55 2LL, a freehold house, sold at £162,500 on the 20th February 2026.

Read more about house prices in LL55.

• Sold Feb 2026£162,500 | 3 Bed House12, Segontium Road South, Caernarfon, LL55 2LL12, Segontium Road South, Caernarfon, LL55 2LL
• Sold Nov 2025£140,000 | 3 Bed House21, Lon Eilian, Caernarfon, LL55 2EG21, Lon Eilian, Caernarfon, LL55 2EG
• Sold Aug 2025£138,500 | 3 Bed House2, Llys Y Foel, Caernarfon, LL55 2LU2, Llys Y Foel, Caernarfon, LL55 2LU
• Sold Nov 2024£157,000 | 3 Bed House6, Margaret Street, Caernarfon, LL55 1NB6, Margaret Street, Caernarfon, LL55 1NB
• Sold Jun 2024£156,350 | 3 Bed House57, Lon Eilian, Caernarfon, LL55 2EG57, Lon Eilian, Caernarfon, LL55 2EG
• Sold Apr 2024£135,000 | 3 Bed House9, Beulah Square, Caernarfon, LL55 2LA9, Beulah Square, Caernarfon, LL55 2LA
• Sold Mar 2024£138,600 | 3 Bed House5, Assheton Terrace, Caernarfon, LL55 2LD5, Assheton Terrace, Caernarfon, LL55 2LD
• Sold Sep 2023£156,500 | 3 Bed House14, Llys Siabod, Caernarfon, LL55 2LT14, Llys Siabod, Caernarfon, LL55 2LT
• Sold Jun 2023£177,500 | 3 Bed House19, Lon Ty Gwyn, Caernarfon, LL55 2EH19, Lon Ty Gwyn, Caernarfon, LL55 2EH
• Sold Jun 2023£120,000 | 3 Bed House4, Beulah Square, Caernarfon, LL55 2LA4, Beulah Square, Caernarfon, LL55 2LA
• Sold Mar 2023£151,000 | 3 Bed House10, Lon Ty Gwyn, Caernarfon, LL55 2EH10, Lon Ty Gwyn, Caernarfon, LL55 2EH
• Sold Dec 2022£140,000 | 3 Bed House9, Llys Siabod, Caernarfon, LL55 2LT9, Llys Siabod, Caernarfon, LL55 2LT
• Sold Nov 2019£143,500 | 3 Bed House18, Lon Arfon, Caernarfon, LL55 2ER18, Lon Arfon, Caernarfon, LL55 2ER
• Sold Feb 2015£88,000 | 3 Bed House49, Lon Eilian, Caernarfon, LL55 2EG49, Lon Eilian, Caernarfon, LL55 2EG
• Sold Jan 2015£80,000 | 3 Bed House7, Cil Coed, Caernarfon, LL55 2DP7, Cil Coed, Caernarfon, LL55 2DP
• Sold Aug 2014£104,000 | 3 Bed House8, Lon Ty Gwyn, Caernarfon, LL55 2EH8, Lon Ty Gwyn, Caernarfon, LL55 2EH
• Sold Mar 2012£96,000 | 3 Bed House6, Lon Helen, Caernarfon, LL55 2EW6, Lon Helen, Caernarfon, LL55 2EW
• Sold Nov 2011£93,000 | 3 Bed House53, Lon Eilian, Caernarfon, LL55 2EG53, Lon Eilian, Caernarfon, LL55 2EG
• Sold Jul 2010£120,000 | 3 Bed House41, Lon Eilian, Caernarfon, LL55 2EG41, Lon Eilian, Caernarfon, LL55 2EG
• Sold May 2010£105,000 | 3 Bed House7, Lon Eilian, Caernarfon, LL55 2EG7, Lon Eilian, Caernarfon, LL55 2EG

Our analysis of the public data ranks 19, Lon Helen, Caernarfon as the 5th largest and the 8th most expensive of the 22 addresses on Lon Helen, Caernarfon, LL55.

Against the LL55 postcode district average, it is £70k less expensive than the typical property.

• Llanfairpwll

  |

  9.9 km away
• Bangor (Gwynedd)

  |

  12.6 km away
• Bodorgan

  |

  12.8 km away

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