According to data from HM Land Registry, 39, William Street, Caernarfon sits on a plot of 79 m².

We have plot size data on 38 out of 39 other houses in the postcode and 39, William Street, Caernarfon sits on the 5th largest plot.

39, William Street, Caernarfon has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Jul 2018.

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, 39, William Street, Caernarfon was last sold on 27th October 2022 for £110,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since October 2022, the market for similar properties has risen by 17.9%.

• Sold Oct 2022£110,000
• Sold Nov 2004£79,950

According to the Land Registry and our network of Estate Agents, there have been 70 sales of properties similar to 39, William Street, Caernarfon within a radius of 500 metres since 2013.

The most recent example is 41, Assheton Terrace, Caernarfon, LL55 2LD, a freehold house which sold for £124,000 on the 13th February 2026.

Read more about house prices in LL55.

• Sold Feb 2026£124,000 | 3 Bed House41, Assheton Terrace, Caernarfon, LL55 2LD41, Assheton Terrace, Caernarfon, LL55 2LD
• 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 Mar 2025£95,000 | 3 Bed House3, Cadnant Road, Caernarfon, LL55 1NA3, Cadnant Road, Caernarfon, LL55 1NA
• Sold Feb 2025£115,000 | 2 Bed House24, South Penrallt, Caernarfon, LL55 1NS24, South Penrallt, Caernarfon, LL55 1NS
• Sold Jan 2025£90,000 | 3 Bed House34, William Street, Caernarfon, LL55 1ND34, William Street, Caernarfon, LL55 1ND
• Sold Nov 2024£150,000 | 3 Bed House12, Holywell Terrace, Caernarfon, LL55 2AP12, Holywell Terrace, Caernarfon, LL55 2AP
• Sold Oct 2024£90,000 | 3 Bed House28, William Street, Caernarfon, LL55 1ND28, William Street, Caernarfon, LL55 1ND
• Sold Jul 2024£111,000 | 3 Bed House37, William Street, Caernarfon, LL55 1ND37, William Street, Caernarfon, LL55 1ND
• Sold Jun 2024£111,500 | 2 Bed House13, Assheton Terrace, Caernarfon, LL55 2LD13, Assheton Terrace, Caernarfon, LL55 2LD
• Sold Feb 2023£137,500 | 2 Bed House37, South Penrallt, Caernarfon, LL55 1NS37, South Penrallt, Caernarfon, LL55 1NS
• Sold Aug 2022£70,000 | 2 Bed House4, Pool Street, Caernarfon, LL55 2AB4, Pool Street, Caernarfon, LL55 2AB
• Sold Jun 2022£134,000 | 2 Bed House40, William Street, Caernarfon, LL55 1ND40, William Street, Caernarfon, LL55 1ND
• Sold Jun 2022£135,000 | 3 Bed House23, New Street, Caernarfon, LL55 2PU23, New Street, Caernarfon, LL55 2PU
• Sold May 2022£107,500 | 3 Bed House20, William Street, Caernarfon, LL55 1ND20, William Street, Caernarfon, LL55 1ND
• Sold Jun 2020£95,000 | 3 Bed House14, William Street, Caernarfon, LL55 1ND14, William Street, Caernarfon, LL55 1ND
• Sold Jul 2019£95,000 | 3 Bed House32, William Street, Caernarfon, LL55 1ND32, William Street, Caernarfon, LL55 1ND
• Sold Oct 2017£63,000 | 3 Bed House9, New Street, Caernarfon, LL55 2PU9, New Street, Caernarfon, LL55 2PU
• Sold Mar 2015£98,500 | 3 Bed House15, William Street, Caernarfon, LL55 1ND15, William Street, Caernarfon, LL55 1ND
• Sold Jan 2013£88,000 | 3 Bed House17, William Street, Caernarfon, LL55 1ND17, William Street, Caernarfon, LL55 1ND

William Street, Caernarfon, LL55 has a total of 39 addresses. According to our analysis of all the public data, 39, William Street, Caernarfon is the 20th largest and the 21st most expensive property on the street.

When compared to the postcode district it is £109k less expensive than the average property in LL55.

• Llanfairpwll

  |

  9.8 km away
• Bodorgan

  |

  12.2 km away
• Bangor (Gwynedd)

  |

  12.7 km away

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