According to data from HM Land Registry, 43, Mountain Street, Caernarfon sits on a plot of 58 m².

We have plot size data on 22 out of 40 other houses in the postcode and 43, Mountain Street, Caernarfon sits on the 9th largest plot.

43, Mountain Street, Caernarfon has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 16 Jul 2019.

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

According to HM Land Registry, 43, Mountain Street, Caernarfon was last sold on 16th February 2015 for £97,500 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since February 2015, the market for similar properties has risen by 43.7%.

• Sold Feb 2015£97,500

According to the Land Registry and our network of Estate Agents, there have been 137 sales of properties similar to 43, Mountain Street, Caernarfon within a radius of 520 metres since 2014.

The most recent example is 34, Margaret Street, Caernarfon, LL55 1NB, a freehold house which sold for £147,500 on the 19th December 2025.

Read more about house prices in LL55.

• Sold Dec 2025£147,500 | 3 Bed House34, Margaret Street, Caernarfon, LL55 1NB34, Margaret Street, Caernarfon, LL55 1NB
• Sold Oct 2025£125,000 | 3 Bed House11, Mountain Street, Caernarfon, LL55 1PW11, Mountain Street, Caernarfon, LL55 1PW
• Sold Apr 2025£155,000 | 3 Bed House33, Victoria Street, Caernarfon, LL55 1PN33, Victoria Street, Caernarfon, LL55 1PN
• Sold Nov 2024£157,000 | 3 Bed House6, Margaret Street, Caernarfon, LL55 1NB6, Margaret Street, Caernarfon, LL55 1NB
• 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 Sep 2024£167,500 | 3 Bed House41, Victoria Street, Caernarfon, LL55 1PN41, Victoria Street, Caernarfon, LL55 1PN
• Sold Aug 2024£147,000 | 3 Bed House38, Margaret Street, Caernarfon, LL55 1NB38, Margaret Street, Caernarfon, LL55 1NB
• Sold Jun 2024£132,500 | 3 Bed House15, Margaret Street, Caernarfon, LL55 1NB15, Margaret Street, Caernarfon, LL55 1NB
• Sold Dec 2023£148,000 | 3 Bed House23, Victoria Street, Caernarfon, LL55 1PN23, Victoria Street, Caernarfon, LL55 1PN
• Sold Nov 2023£130,000 | 3 Bed House2, Mary Street, Caernarfon, LL55 1NE2, Mary Street, Caernarfon, LL55 1NE
• Sold Sep 2023£106,000 | 3 Bed House8, Margaret Street, Caernarfon, LL55 1NB8, Margaret Street, Caernarfon, LL55 1NB
• Sold Mar 2023£125,000 | 3 Bed House9, Margaret Street, Caernarfon, LL55 1NB9, Margaret Street, Caernarfon, LL55 1NB
• Sold Feb 2023£125,000 | 3 Bed House35, Victoria Street, Caernarfon, LL55 1PN35, Victoria Street, Caernarfon, LL55 1PN
• 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
• Sold Jun 2014£117,500 | 3 Bed House35, Mountain Street, Caernarfon, LL55 1PW35, Mountain Street, Caernarfon, LL55 1PW

Mountain Street, Caernarfon, LL55 has a total of 40 addresses. According to our analysis of all the public data, 43, Mountain Street, Caernarfon is the 8th largest and the 8th most expensive property on the street.

When compared to the postcode district it is £81k less expensive than the average property in LL55.

• Llanfairpwll

  |

  9.7 km away
• Bodorgan

  |

  12.2 km away
• Bangor (Gwynedd)

  |

  12.6 km away

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