HM Land Registry records the plot of land for 18, Cwm Silyn, Caernarfon as measuring 200 m².

That makes it the 13th largest plot in the postcode, where 15 of the 26 other houses have recorded plot data.

18, Cwm Silyn, Caernarfon has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 11 Sep 2014.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 18, Cwm Silyn, Caernarfon completed on 31st January 1996 at £42,900 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

• Sold Jan 1996£42,900

Since 2008 95 properties similar to 18, Cwm Silyn, Caernarfon have sold within a radius of 820 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th September 2025, was 59, Glan Seiont, Caernarfon, LL55 2DX, a freehold house which sold for £295,000.

Read more about house prices in LL55.

• Sold Sep 2025£295,000 | 3 Bed House59, Glan Seiont, Caernarfon, LL55 2DX59, Glan Seiont, Caernarfon, LL55 2DX
• Sold Jul 2025£262,500 | 3 Bed House61, Ffordd Eryri, Caernarfon, LL55 2UR61, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Jun 2025£230,000 | 3 Bed House3, Ffordd Eryri, Caernarfon, LL55 2US3, Ffordd Eryri, Caernarfon, LL55 2US
• Sold Apr 2025£245,000 | 3 Bed House37, Ffordd Eryri, Caernarfon, LL55 2UR37, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Jun 2024£212,500 | 3 Bed House27, Caeau Bach, Caernarfon, LL55 2BZ27, Caeau Bach, Caernarfon, LL55 2BZ
• Sold Dec 2023£250,000 | 3 Bed House26, Cwm Silyn, Caernarfon, LL55 2AG26, Cwm Silyn, Caernarfon, LL55 2AG
• Sold Nov 2022£250,000 | 3 Bed House13, Tyddyn Llwydyn, Caernarfon, LL55 2LX13, Tyddyn Llwydyn, Caernarfon, LL55 2LX
• Sold Nov 2021£250,000 | 3 Bed House16, Glan Seiont, Caernarfon, LL55 2DX16, Glan Seiont, Caernarfon, LL55 2DX
• Sold Jul 2021£197,500 | 3 Bed House27, Ffordd Eryri, Caernarfon, LL55 2UR27, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Oct 2020£187,500 | 3 Bed House11, Bryn Hyfryd, Caernarfon, LL55 2UU11, Bryn Hyfryd, Caernarfon, LL55 2UU
• Sold Oct 2019£165,000 | 3 Bed House44, Ffordd Eryri, Caernarfon, LL55 2UR44, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Feb 2019£155,000 | 3 Bed House52, Ffordd Eryri, Caernarfon, LL55 2UR52, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Feb 2019£143,000 | 3 Bed House10, Lon Cilgwyn, Caernarfon, LL55 2DQ10, Lon Cilgwyn, Caernarfon, LL55 2DQ
• Sold Dec 2017£178,000 | 3 Bed House50, Ffordd Eryri, Caernarfon, LL55 2UR50, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Aug 2016£190,000 | 3 Bed House60, Glan Seiont, Caernarfon, LL55 2DX60, Glan Seiont, Caernarfon, LL55 2DX
• Sold Nov 2015£180,000 | 3 Bed House2, Tyddyn Llwydyn, Caernarfon, LL55 2LX2, Tyddyn Llwydyn, Caernarfon, LL55 2LX
• Sold Aug 2015£185,500 | 3 Bed House18, Tyddyn Llwydyn, Caernarfon, LL55 2LX18, Tyddyn Llwydyn, Caernarfon, LL55 2LX
• Sold Jan 2015£170,000 | 3 Bed House54, Tyddyn Llwydyn, Caernarfon, LL55 2LX54, Tyddyn Llwydyn, Caernarfon, LL55 2LX
• Sold Oct 2013£172,000 | 3 Bed House42, Ffordd Eryri, Caernarfon, LL55 2UR42, Ffordd Eryri, Caernarfon, LL55 2UR
• Sold Jan 2008£176,500 | 3 Bed House23, Caeau Bach, Caernarfon, LL55 2BZ23, Caeau Bach, Caernarfon, LL55 2BZ

Of the 26 addresses on Cwm Silyn, Caernarfon, LL55, 18, Cwm Silyn, Caernarfon comes out as the 7th largest and the 7th most expensive in our analysis of the public data.

It is also £37k more expensive than the average property across the LL55 district.

• Llanfairpwll

  |

  10.5 km away
• Bangor (Gwynedd)

  |

  13.1 km away
• Bodorgan

  |

  13.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.