According to data from HM Land Registry, 6, Lon Helen, Caernarfon sits on a plot of 198 m².

We have plot size data on 4 out of 14 other houses in the postcode and 6, Lon Helen, Caernarfon sits on the 4th largest plot.

6, Lon Helen, Caernarfon has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 06 Dec 2011.

The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 6, Lon Helen, Caernarfon was last sold on 16th March 2012 for £96,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since March 2012, the market for similar properties has risen by 107.4%.

• Sold Mar 2012£96,000

According to the Land Registry and our network of Estate Agents, there have been 83 sales of properties similar to 6, Lon Helen, Caernarfon within a radius of 600 metres since 2010.

The most recent example is 12, Segontium Road South, Caernarfon, LL55 2LL, a freehold house which sold for £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 Dec 2025£147,500 | 3 Bed House34, Margaret Street, Caernarfon, LL55 1NB34, Margaret Street, Caernarfon, LL55 1NB
• Sold Nov 2025£140,000 | 3 Bed House21, Lon Eilian, Caernarfon, LL55 2EG21, Lon Eilian, Caernarfon, LL55 2EG
• Sold Aug 2024£147,000 | 3 Bed House38, Margaret Street, Caernarfon, LL55 1NB38, 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£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 Dec 2016£95,000 | 3 Bed House10, Cil Coed, Caernarfon, LL55 2DP10, Cil Coed, Caernarfon, LL55 2DP
• 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 Nov 2011£93,000 | 3 Bed House53, Lon Eilian, Caernarfon, LL55 2EG53, Lon Eilian, Caernarfon, LL55 2EG
• Sold Oct 2010£89,950 | 3 Bed House16, Lon Cefn Du, Caernarfon, LL55 2EN16, Lon Cefn Du, Caernarfon, LL55 2EN
• 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

Lon Helen, Caernarfon, LL55 has a total of 22 addresses. According to our analysis of all the public data, 6, Lon Helen, Caernarfon is the 9th largest and the 9th most expensive property on the street.

When compared to the postcode district it is £72k less expensive than the average property in LL55.

• Llanfairpwll

  |

  9.9 km away
• Bangor (Gwynedd)

  |

  12.6 km away
• Bodorgan

  |

  12.8 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.