12, Mountain Street, Caernarfon has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Nov 2024.

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 43 sales of comparable properties within 520 metres of 12, Mountain Street, Caernarfon since 2016.

Most recently, 4, Mary Street, Caernarfon, LL55 1NE, a freehold house, sold at £118,500 on the 5th June 2026.

Read more about house prices in LL55.

• Sold Jun 2026£118,500 | 2 Bed House4, Mary Street, Caernarfon, LL55 1NE4, Mary Street, Caernarfon, LL55 1NE
• Sold Feb 2026£124,000 | 3 Bed House41, Assheton Terrace, Caernarfon, LL55 2LD41, Assheton Terrace, Caernarfon, LL55 2LD
• Sold Dec 2025£115,000 | 2 Bed HouseBryntirion, Victoria Road, Caernarfon, LL55 2RHBryntirion, Victoria Road, Caernarfon, LL55 2RH
• Sold Oct 2025£124,000 | 2 Bed House17, Constantine Terrace, Caernarfon, LL55 2HL17, Constantine Terrace, Caernarfon, LL55 2HL
• Sold Oct 2025£125,000 | 3 Bed House11, Mountain Street, Caernarfon, LL55 1PW11, Mountain Street, Caernarfon, LL55 1PW
• Sold Sep 2025£120,000 | 3 Bed House4, Cadnant Road, Caernarfon, LL55 1NA4, Cadnant Road, Caernarfon, LL55 1NA
• Sold Aug 2025£92,500 | 3 Bed House18, New Street, Caernarfon, LL55 2PU18, New Street, Caernarfon, LL55 2PU
• Sold Feb 2025£115,000 | 3 Bed House24, South Penrallt, Caernarfon, LL55 1NS24, South Penrallt, Caernarfon, LL55 1NS
• Sold Dec 2024£121,000 | 2 Bed House1, Mark Lane, Caernarfon, LL55 2RY1, Mark Lane, Caernarfon, LL55 2RY
• Sold Jun 2024£111,500 | 3 Bed House13, Assheton Terrace, Caernarfon, LL55 2LD13, Assheton Terrace, Caernarfon, LL55 2LD
• Sold Feb 2024£109,000 | 3 Bed House57, Mountain Street, Caernarfon, LL55 1PW57, Mountain Street, Caernarfon, LL55 1PW
• Sold Dec 2023£105,000 | 2 Bed House2, Mark Lane, Caernarfon, LL55 2RY2, Mark Lane, Caernarfon, LL55 2RY
• Sold Aug 2023£116,500 | 2 Bed HouseMenai View, Victoria Road, Caernarfon, LL55 2RHMenai View, Victoria Road, Caernarfon, LL55 2RH
• Sold Mar 2023£108,000 | 2 Bed House6, Cwrt Pafiliwn, Caernarfon, LL55 1BW6, Cwrt Pafiliwn, Caernarfon, LL55 1BW
• Sold Feb 2023£137,500 | 3 Bed House37, South Penrallt, Caernarfon, LL55 1NS37, South Penrallt, Caernarfon, LL55 1NS
• Sold Jun 2022£134,000 | 3 Bed House40, William Street, Caernarfon, LL55 1ND40, William Street, Caernarfon, LL55 1ND
• Sold May 2022£130,000 | 2 Bed House3, Eleanor Street, Caernarfon, LL55 1PG3, Eleanor Street, Caernarfon, LL55 1PG
• Sold Sep 2021£135,000 | 2 Bed House39, Snowdon Street, Caernarfon, LL55 2RD39, Snowdon Street, Caernarfon, LL55 2RD
• Sold Jul 2019£95,000 | 3 Bed House32, William Street, Caernarfon, LL55 1ND32, William Street, Caernarfon, LL55 1ND
• Sold May 2016£111,000 | 3 Bed House2, William Street, Caernarfon, LL55 1ND2, William Street, Caernarfon, LL55 1ND

Our analysis of the public data ranks 12, Mountain Street, Caernarfon as the 28th largest and the 28th most expensive of the 40 addresses on Mountain Street, Caernarfon, LL55.

Against the LL55 postcode district average, it is £100k 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.