According to data from HM Land Registry, Treflyn, Holyhead sits on a plot of 1,914 m².

We have plot size data on 1 out of 3 other houses in the postcode and Treflyn, Holyhead sits on the largest plot.

Treflyn, Holyhead has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 19 Jul 2022.

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

According to HM Land Registry, Treflyn, Holyhead was last sold on 3rd December 2010 for £235,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since December 2010, the market for similar properties has risen by 88.9%.

• Sold Dec 2010£235,000

According to the Land Registry and our network of Estate Agents, there have been 21 sales of properties similar to Treflyn, Holyhead within a radius of 5.0 kilometres since 2012.

The most recent example is Tyn Llain, Holyhead, LL65 4RE, a freehold house which sold for £385,000 on the 4th June 2025.

Read more about house prices in LL65.

• Sold Jun 2025£385,000 | 5 Bed HouseTyn Llain, Holyhead, LL65 4RETyn Llain, Holyhead, LL65 4RE
• Sold May 2023£465,000 | 4 Bed HousePlas Elfan, Holyhead, LL65 4RSPlas Elfan, Holyhead, LL65 4RS
• Sold Mar 2023£170,000 | 4 Bed HouseWylfa, Ty Croes, LL63 5RTWylfa, Ty Croes, LL63 5RT
• Sold Sep 2022£500,000 | 5 Bed HouseCuddfan, Bodorgan, LL62 5DWCuddfan, Bodorgan, LL62 5DW
• Sold Nov 2021£450,000 | 5 Bed HouseHeddfan, Bodorgan, LL62 5DWHeddfan, Bodorgan, LL62 5DW
• Sold Oct 2021£380,000 | 5 Bed HouseMaen Y Ffynnon, Holyhead, LL65 4RBMaen Y Ffynnon, Holyhead, LL65 4RB
• Sold Oct 2021£330,000 | 5 Bed House29, Tyn Berllan Estate, Holyhead, LL65 3PT29, Tyn Berllan Estate, Holyhead, LL65 3PT
• Sold Sep 2021£540,000 | 5 Bed HousePen Y Bryn, Bodorgan, LL62 5PYPen Y Bryn, Bodorgan, LL62 5PY
• Sold Dec 2020£575,000 | 4 Bed HouseBwlch Coch, Bodorgan, LL62 5DUBwlch Coch, Bodorgan, LL62 5DU
• Sold Jan 2020£340,000 | 4 Bed HouseHafan Dawel, Holyhead, LL65 4SRHafan Dawel, Holyhead, LL65 4SR
• Sold Dec 2019£327,000 | 5 Bed HouseOld Church Schoolroom, Holyhead, LL65 4REOld Church Schoolroom, Holyhead, LL65 4RE
• Sold Dec 2019£270,000 | 4 Bed HouseTy Newydd Penrhos, Bodorgan, LL62 5DWTy Newydd Penrhos, Bodorgan, LL62 5DW
• Sold May 2019£120,000 | 4 Bed HouseUnit 5A, Mona Industrial Park, Holyhead, LL65 4RJUnit 5A, Mona Industrial Park, Holyhead, LL65 4RJ
• Sold Oct 2018£265,000 | 4 Bed HouseGlengari, Llangefni, LL77 7LQGlengari, Llangefni, LL77 7LQ
• Sold Feb 2018£460,000 | 5 Bed HouseLlain Alaw, Bodorgan, LL62 5DRLlain Alaw, Bodorgan, LL62 5DR
• Sold Jul 2016£230,000 | 5 Bed HouseTrem Y Wawr, Llangefni, LL77 7DXTrem Y Wawr, Llangefni, LL77 7DX
• Sold Jul 2015£260,000 | 4 Bed HouseCaeau Bychain, Bodorgan, LL62 5PWCaeau Bychain, Bodorgan, LL62 5PW
• Sold Oct 2014£285,500 | 5 Bed HouseHen Siop, Llangefni, LL77 7EQHen Siop, Llangefni, LL77 7EQ
• Sold Oct 2014£280,000 | 5 Bed HouseLlain Y Groes, Holyhead, LL65 4SNLlain Y Groes, Holyhead, LL65 4SN
• Sold Dec 2012£465,000 | 5 Bed HouseTegfan, Bodorgan, LL62 5DTTegfan, Bodorgan, LL62 5DT

Gwalchmai, Holyhead, LL65 has a total of 359 addresses. According to our analysis of all the public data, Treflyn, Holyhead is the 48th largest and the 50th most expensive property on the street.

When compared to the postcode district it is £142k more expensive than the average property in LL65.

• Ty Croes

  |

  5.9 km away
• Bodorgan

  |

  5.9 km away
• Rhosneigr

  |

  7.0 km away

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