17, Glanffynnon, Caernarfon occupies a 313 m² plot as recorded by HM Land Registry.

Of the 14 other houses in this postcode, 9 have recorded plot sizes, and this one ranks as the 8th largest.

17, Glanffynnon, Caernarfon has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 29 Apr 2011.

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

17, Glanffynnon, Caernarfon last changed hands on 10th July 2019, selling for £163,000. 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 27.7% since July 2019.

• Sold Jul 2019£163,000
• Sold Apr 2016£154,750
• Sold Oct 2011£140,000

Land Registry records and our Estate Agent network show 82 sales of comparable properties within 2.6 kilometres of 17, Glanffynnon, Caernarfon since 2014.

Most recently, 50, Nant Y Glyn, Caernarfon, LL55 4AH, a freehold house, sold at £235,000 on the 17th February 2026.

Read more about house prices in LL55.

• Sold Feb 2026£235,000 | 3 Bed House50, Nant Y Glyn, Caernarfon, LL55 4AH50, Nant Y Glyn, Caernarfon, LL55 4AH
• Sold Jan 2026£205,000 | 3 Bed House24, Glanffynnon, Caernarfon, LL55 4PR24, Glanffynnon, Caernarfon, LL55 4PR
• Sold Nov 2025£145,000 | 3 Bed House2 Minffordd Terrace, Caernarfon, LL55 4PU2 Minffordd Terrace, Caernarfon, LL55 4PU
• Sold Aug 2025£190,000 | 3 Bed House29, Glanffynnon, Caernarfon, LL55 4PR29, Glanffynnon, Caernarfon, LL55 4PR
• Sold Jul 2024£225,000 | 3 Bed House54, Glanffynnon, Caernarfon, LL55 4PR54, Glanffynnon, Caernarfon, LL55 4PR
• Sold Nov 2023£218,000 | 3 Bed House11, Glanffynnon, Caernarfon, LL55 4PS11, Glanffynnon, Caernarfon, LL55 4PS
• Sold Jul 2023£200,000 | 3 Bed House8, Glanffynnon, Caernarfon, LL55 4PS8, Glanffynnon, Caernarfon, LL55 4PS
• Sold Jun 2023£25,000 | 3 Bed HouseY Meddygfa, Station Road, Caernarfon, LL55 4AGY Meddygfa, Station Road, Caernarfon, LL55 4AG
• Sold Sep 2022£225,000 | 3 Bed House27, Glanffynnon, Caernarfon, LL55 4PR27, Glanffynnon, Caernarfon, LL55 4PR
• Sold Jul 2022£241,855 | 3 Bed House16, Glanffynnon, Caernarfon, LL55 4PS16, Glanffynnon, Caernarfon, LL55 4PS
• Sold Dec 2021£222,500 | 3 Bed House53, Nant Y Glyn, Caernarfon, LL55 4AH53, Nant Y Glyn, Caernarfon, LL55 4AH
• Sold Mar 2021£195,000 | 3 Bed House8, Mountain View, Caernarfon, LL55 4PL8, Mountain View, Caernarfon, LL55 4PL
• Sold Mar 2021£179,950 | 3 Bed House28, Glanffynnon, Caernarfon, LL55 4PR28, Glanffynnon, Caernarfon, LL55 4PR
• Sold Nov 2020£169,950 | 3 Bed House37, Glanffynnon, Caernarfon, LL55 4PR37, Glanffynnon, Caernarfon, LL55 4PR
• Sold Jun 2019£175,000 | 3 Bed House13, Minffordd, Caernarfon, LL55 4PU13, Minffordd, Caernarfon, LL55 4PU
• Sold Nov 2017£152,500 | 3 Bed House10, Afon Rhos Estate, Caernarfon, LL55 4SE10, Afon Rhos Estate, Caernarfon, LL55 4SE
• Sold Jul 2016£168,950 | 3 Bed House6, Minffordd, Caernarfon, LL55 4PU6, Minffordd, Caernarfon, LL55 4PU
• Sold Sep 2015£182,500 | 3 Bed House56, Glanffynnon, Caernarfon, LL55 4PR56, Glanffynnon, Caernarfon, LL55 4PR
• Sold Aug 2015£157,500 | 2 Bed House21 Bryn Moelyn, Caernarfon, LL55 4PH21 Bryn Moelyn, Caernarfon, LL55 4PH
• Sold Nov 2014£162,000 | 3 Bed House52, Nant Y Glyn, Caernarfon, LL55 4AH52, Nant Y Glyn, Caernarfon, LL55 4AH

Our analysis of the public data ranks 17, Glanffynnon, Caernarfon as the 57th largest and the 37th most expensive of the 62 addresses on Glanffynnon, Llanrug, Caernarfon, LL55.

Against the LL55 postcode district average, it is £9k less expensive than the typical property.

• Llanfairpwll

  |

  8.4 km away
• Bangor (Gwynedd)

  |

  9.2 km away
• Bodorgan

  |

  16.5 km away

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