According to data from HM Land Registry, Eirianfa, Caernarfon sits on a plot of 93 m².

We have plot size data on 7 out of 14 other houses in the postcode and Eirianfa, Caernarfon sits on the 5th largest plot.

Eirianfa, Caernarfon has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 10 Sep 2010.

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

According to HM Land Registry, Eirianfa, Caernarfon was last sold on 15th November 2013 for £122,000 and was recorded as a freehold house.

The property has had 3 sales since 1995.

Since November 2013, the market for similar properties has risen by 37.7%.

• Sold Nov 2013£122,000
• Sold Nov 2010£120,000
• Sold Dec 2005£70,000

According to the Land Registry and our network of Estate Agents, there have been 42 sales of properties similar to Eirianfa, Caernarfon within a radius of 2.9 kilometres since 2016.

The most recent example is 3 Bryn Yr Afon, Tan Y Maes, Y Felinheli, LL56 4UQ, a freehold house which sold for £188,000 on the 20th November 2025.

Read more about house prices in LL55.

• Sold Nov 2025£188,000 | 2 Bed House3 Bryn Yr Afon, Tan Y Maes, Y Felinheli, LL56 4UQ3 Bryn Yr Afon, Tan Y Maes, Y Felinheli, LL56 4UQ
• Sold Oct 2025£135,000 | 2 Bed House9, Brynffynnon, Y Felinheli, LL56 4SX9, Brynffynnon, Y Felinheli, LL56 4SX
• Sold Jan 2025£170,000 | 2 Bed House2 Nant Y Mount, Bangor, LL57 2SQ2 Nant Y Mount, Bangor, LL57 2SQ
• Sold Dec 2024£225,000 | 2 Bed HouseTynrardd, Caernarfon, LL55 3AETynrardd, Caernarfon, LL55 3AE
• Sold Sep 2024£82,000 | 2 Bed House8, Brynffynnon, Y Felinheli, LL56 4SX8, Brynffynnon, Y Felinheli, LL56 4SX
• Sold Aug 2024£185,000 | 3 Bed House1 Dockwood Bungalows, Ffordd Siabod, Y Felinheli, LL56 4XA1 Dockwood Bungalows, Ffordd Siabod, Y Felinheli, LL56 4XA
• Sold Jun 2024£134,000 | 3 Bed House13, Augusta Place, Y Felinheli, LL56 4HJ13, Augusta Place, Y Felinheli, LL56 4HJ
• Sold Dec 2023£207,500 | 3 Bed House1, Sea View Terrace, Y Felinheli, LL56 4TQ1, Sea View Terrace, Y Felinheli, LL56 4TQ
• Sold Jun 2023£125,000 | 2 Bed House10, Bush Road, Y Felinheli, LL56 4UJ10, Bush Road, Y Felinheli, LL56 4UJ
• Sold May 2022£173,000 | 2 Bed House12, Brynffynnon, Y Felinheli, LL56 4SX12, Brynffynnon, Y Felinheli, LL56 4SX
• Sold Feb 2022£150,000 | 2 Bed House14, Helen Terrace, Y Felinheli, LL56 4SZ14, Helen Terrace, Y Felinheli, LL56 4SZ
• Sold Dec 2021£175,000 | 2 Bed House4, Tan Y Maes, Y Felinheli, LL56 4UQ4, Tan Y Maes, Y Felinheli, LL56 4UQ
• Sold Oct 2021£112,000 | 2 Bed House10, Caernarfon Road, Y Felinheli, LL56 4NQ10, Caernarfon Road, Y Felinheli, LL56 4NQ
• Sold Jul 2021£105,000 | 3 Bed House38, Bangor Street, Y Felinheli, LL56 4JD38, Bangor Street, Y Felinheli, LL56 4JD
• Sold Jul 2021£183,000 | 2 Bed House3 Penscoins Cottages, Y Felinheli, LL56 4QG3 Penscoins Cottages, Y Felinheli, LL56 4QG
• Sold Jun 2021£165,000 | 3 Bed House1 Cefn Gryddyn, Caernarfon, LL55 3AE1 Cefn Gryddyn, Caernarfon, LL55 3AE
• Sold Apr 2021£102,000 | 3 Bed House3, Post Office Row, Caernarfon, LL55 1YU3, Post Office Row, Caernarfon, LL55 1YU
• Sold Apr 2019£125,000 | 3 Bed House41, Ffordd Garnedd, Y Felinheli, LL56 4QY41, Ffordd Garnedd, Y Felinheli, LL56 4QY
• Sold Mar 2019£100,000 | 2 Bed House2, Bush Road, Y Felinheli, LL56 4UJ2, Bush Road, Y Felinheli, LL56 4UJ
• Sold May 2016£122,000 | 3 Bed House2, Augusta Place, Y Felinheli, LL56 4HJ2, Augusta Place, Y Felinheli, LL56 4HJ

Llanddeiniolen, Caernarfon, LL55 has a total of 81 addresses. According to our analysis of all the public data, Eirianfa, Caernarfon is the 73rd largest and the 70th most expensive property on the street.

When compared to the postcode district it is £49k less expensive than the average property in LL55.

• Llanfairpwll

  |

  5.1 km away
• Bangor (Gwynedd)

  |

  5.5 km away
• Llanfairfechan

  |

  15.5 km away

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