According to data from HM Land Registry, 6, William Street, Caernarfon sits on a plot of 77 m².

We have plot size data on 38 out of 39 other houses in the postcode and 6, William Street, Caernarfon sits on the 10th largest plot.

6, William Street, Caernarfon has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Mar 2017.

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, 6, William Street, Caernarfon was last sold on 5th March 2004 for £79,600 and was recorded as a freehold house.

The property has had 3 sales since 1995.

• Sold Mar 2004£79,600
• Sold Oct 2003£73,750
• Sold Mar 1999£26,000

According to the Land Registry and our network of Estate Agents, there have been 53 sales of properties similar to 6, William Street, Caernarfon within a radius of 520 metres since 2016.

The most recent example is 7, Hendre Street, Caernarfon, LL55 2HY, a freehold house which sold for £99,000 on the 3rd October 2025.

Read more about house prices in LL55.

• Sold Oct 2025£99,000 | 2 Bed House7, Hendre Street, Caernarfon, LL55 2HY7, Hendre Street, Caernarfon, LL55 2HY
• Sold Sep 2025£120,000 | 3 Bed House4, Cadnant Road, Caernarfon, LL55 1NA4, Cadnant Road, Caernarfon, LL55 1NA
• Sold May 2025£85,000 | 2 Bed House6, Holywell Terrace, Caernarfon, LL55 2AP6, Holywell Terrace, Caernarfon, LL55 2AP
• Sold May 2025£85,000 | 2 Bed House30, St. Helens Street, Caernarfon, LL55 2HU30, St. Helens Street, Caernarfon, LL55 2HU
• Sold May 2025£105,000 | 2 Bed House34, New Street, Caernarfon, LL55 2PU34, New Street, Caernarfon, LL55 2PU
• Sold May 2025£110,000 | 2 Bed House33, New Street, Caernarfon, LL55 2PU33, New Street, Caernarfon, LL55 2PU
• Sold Feb 2025£115,000 | 2 Bed House24, South Penrallt, Caernarfon, LL55 1NS24, South Penrallt, Caernarfon, LL55 1NS
• Sold Feb 2025£95,000 | 2 Bed House3, Hendre Street, Caernarfon, LL55 2HY3, Hendre Street, Caernarfon, LL55 2HY
• Sold Oct 2024£80,000 | 2 Bed House4, Holywell Terrace, Caernarfon, LL55 2AP4, Holywell Terrace, Caernarfon, LL55 2AP
• Sold Mar 2024£115,000 | 2 Bed House42, Chapel Street, Caernarfon, LL55 2PS42, Chapel Street, Caernarfon, LL55 2PS
• Sold Sep 2023£118,000 | 2 Bed House4, William Street, Caernarfon, LL55 1ND4, William Street, Caernarfon, LL55 1ND
• 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 Nov 2021£89,950 | 2 Bed House8, Holywell Terrace, Caernarfon, LL55 2AP8, Holywell Terrace, Caernarfon, LL55 2AP
• Sold Aug 2021£102,000 | 2 Bed House29, William Street, Caernarfon, LL55 1ND29, William Street, Caernarfon, LL55 1ND
• Sold Dec 2020£90,000 | 2 Bed House21, William Street, Caernarfon, LL55 1ND21, William Street, Caernarfon, LL55 1ND
• Sold Jul 2019£95,000 | 3 Bed House32, William Street, Caernarfon, LL55 1ND32, William Street, Caernarfon, LL55 1ND
• Sold Apr 2019£70,000 | 2 Bed House13, New Street, Caernarfon, LL55 2PU13, New Street, Caernarfon, LL55 2PU
• Sold May 2016£111,000 | 2 Bed House2, William Street, Caernarfon, LL55 1ND2, William Street, Caernarfon, LL55 1ND

William Street, Caernarfon, LL55 has a total of 39 addresses. According to our analysis of all the public data, 6, William Street, Caernarfon is the 36th largest and the 36th most expensive property on the street.

When compared to the postcode district it is £121k 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.