31, Mountain Street, Caernarfon occupies a 58 m² plot as recorded by HM Land Registry.

Of the 40 other houses in this postcode, 22 have recorded plot sizes, and this one ranks as the 13th largest.

31, Mountain Street, Caernarfon has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 03 Sep 2013.

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

31, Mountain Street, Caernarfon last changed hands on 3rd October 2014, selling for £115,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 4 times since 1995.

The market for similar properties has risen by 43.5% since October 2014.

• Sold Oct 2014£115,000
• Sold Jun 2001£47,500
• Sold Mar 1997£37,500

Land Registry records and our Estate Agent network show 150 sales of comparable properties within 520 metres of 31, Mountain Street, Caernarfon since 2016.

Most recently, 45, Eleanor Street, Caernarfon, LL55 1PG, a freehold house, sold at £162,000 on the 20th February 2026.

Read more about house prices in LL55.

• Sold Feb 2026£162,000 | 3 Bed House45, Eleanor Street, Caernarfon, LL55 1PG45, Eleanor Street, Caernarfon, LL55 1PG
• Sold Feb 2026£180,000 | 3 Bed House28, Victoria Street, Caernarfon, LL55 1PN28, Victoria Street, Caernarfon, LL55 1PN
• Sold Jun 2025£165,000 | 3 Bed House10, Eleanor Street, Caernarfon, LL55 1PG10, Eleanor Street, Caernarfon, LL55 1PG
• Sold Apr 2025£155,000 | 3 Bed House33, Victoria Street, Caernarfon, LL55 1PN33, Victoria Street, Caernarfon, LL55 1PN
• Sold Feb 2025£168,500 | 3 Bed House6, Edward Street, Caernarfon, LL55 1PH6, Edward Street, Caernarfon, LL55 1PH
• Sold Nov 2024£157,000 | 3 Bed House6, Margaret Street, Caernarfon, LL55 1NB6, Margaret Street, Caernarfon, LL55 1NB
• Sold Oct 2024£170,000 | 3 Bed House9, Edward Street, Caernarfon, LL55 1PH9, Edward Street, Caernarfon, LL55 1PH
• Sold Sep 2024£167,500 | 3 Bed House41, Victoria Street, Caernarfon, LL55 1PN41, Victoria Street, Caernarfon, LL55 1PN
• Sold Sep 2024£170,000 | 3 Bed House51, Mountain Street, Caernarfon, LL55 1PW51, Mountain Street, Caernarfon, LL55 1PW
• Sold Sep 2024£170,000 | 3 Bed House53, Mountain Street, Caernarfon, LL55 1PW53, Mountain Street, Caernarfon, LL55 1PW
• Sold Aug 2024£140,000 | 3 Bed House14, Victoria Street, Caernarfon, LL55 1PN14, Victoria Street, Caernarfon, LL55 1PN
• Sold Apr 2024£147,000 | 3 Bed House29, Victoria Street, Caernarfon, LL55 1PN29, Victoria Street, Caernarfon, LL55 1PN
• Sold Dec 2023£148,000 | 3 Bed House23, Victoria Street, Caernarfon, LL55 1PN23, Victoria Street, Caernarfon, LL55 1PN
• Sold Feb 2023£125,000 | 3 Bed House35, Victoria Street, Caernarfon, LL55 1PN35, Victoria Street, Caernarfon, LL55 1PN
• Sold Apr 2022£148,000 | 3 Bed House17, Margaret Street, Caernarfon, LL55 1NB17, Margaret Street, Caernarfon, LL55 1NB
• Sold Oct 2021£129,500 | 3 Bed House13, Mountain Street, Caernarfon, LL55 1PW13, Mountain Street, Caernarfon, LL55 1PW
• Sold Jan 2021£135,000 | 3 Bed House15, Mountain Street, Caernarfon, LL55 1PW15, Mountain Street, Caernarfon, LL55 1PW
• Sold Jan 2021£110,000 | 3 Bed House33, Mountain Street, Caernarfon, LL55 1PW33, Mountain Street, Caernarfon, LL55 1PW
• Sold May 2020£125,000 | 3 Bed House49, Mountain Street, Caernarfon, LL55 1PW49, Mountain Street, Caernarfon, LL55 1PW
• Sold Mar 2016£95,000 | 3 Bed House45, Mountain Street, Caernarfon, LL55 1PW45, Mountain Street, Caernarfon, LL55 1PW

Our analysis of the public data ranks 31, Mountain Street, Caernarfon as the 4th largest and the 4th most expensive of the 40 addresses on Mountain Street, Caernarfon, LL55.

Against the LL55 postcode district average, it is £74k less expensive than the typical property.

• Llanfairpwll

  |

  9.7 km away
• Bodorgan

  |

  12.2 km away
• Bangor (Gwynedd)

  |

  12.6 km away

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