HM Land Registry records the plot of land for Janvallyn, Bangor as measuring 729 m².

That makes it the 2nd largest plot in the postcode, where all 3 other houses have recorded plot data.

Janvallyn, Bangor has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 05 Oct 2024.

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

Since 2007 28 properties similar to Janvallyn, Bangor have sold within a radius of 2.4 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 30th March 2026, was 8, Maes Ogwen, Bangor, LL57 4PH, a freehold house which sold for £237,500.

Read more about house prices in LL57.

• Sold Mar 2026£237,500 | 4 Bed House8, Maes Ogwen, Bangor, LL57 4PH8, Maes Ogwen, Bangor, LL57 4PH
• Sold Feb 2026£290,000 | 4 Bed House18, Ystad Coetmor, Bangor, LL57 3DR18, Ystad Coetmor, Bangor, LL57 3DR
• Sold Feb 2026£257,000 | 4 Bed House27, Tanrhiw Road, Bangor, LL57 4AH27, Tanrhiw Road, Bangor, LL57 4AH
• Sold Feb 2026£220,000 | 4 Bed HouseThe Store, Bangor, LL57 4AUThe Store, Bangor, LL57 4AU
• Sold Dec 2025£217,500 | 4 Bed House5, Godre'R Parc, Bangor, LL57 4RF5, Godre'R Parc, Bangor, LL57 4RF
• Sold Dec 2024£244,000 | 4 Bed HouseTy Derwen, Bangor, LL57 4UNTy Derwen, Bangor, LL57 4UN
• Sold Feb 2023£420,000 | 4 Bed HouseFferm Bryniau, Lon Y Grug, Bangor, LL57 4EQFferm Bryniau, Lon Y Grug, Bangor, LL57 4EQ
• Sold Nov 2021£253,000 | 4 Bed HouseBryn Seiriol, Dob, Bangor, LL57 4PNBryn Seiriol, Dob, Bangor, LL57 4PN
• Sold May 2019£176,500 | 4 Bed House49, Tanrhiw Road, Bangor, LL57 4AH49, Tanrhiw Road, Bangor, LL57 4AH
• Sold Apr 2019£163,500 | 4 Bed House15, Tanrhiw Road, Bangor, LL57 4AH15, Tanrhiw Road, Bangor, LL57 4AH
• Sold Mar 2019£188,000 | 4 Bed HouseTyddyn Tegai, Bangor, LL57 4ARTyddyn Tegai, Bangor, LL57 4AR
• Sold Nov 2018£222,500 | 4 Bed HouseGorwel Deg, Bangor, LL57 4ALGorwel Deg, Bangor, LL57 4AL
• Sold Aug 2018£210,000 | 4 Bed House12, Ystad Coetmor, Bangor, LL57 3DR12, Ystad Coetmor, Bangor, LL57 3DR
• Sold Jun 2017£240,000 | 4 Bed HouseBryn Rhedyn, Dob, Bangor, LL57 4PNBryn Rhedyn, Dob, Bangor, LL57 4PN
• Sold Jun 2016£195,000 | 4 Bed HouseLlidiart Y Mynydd, Llety, Bangor, LL57 4RELlidiart Y Mynydd, Llety, Bangor, LL57 4RE
• Sold Sep 2015£200,000 | 4 Bed HouseGarw, Tanrhiw Road, Bangor, LL57 4AHGarw, Tanrhiw Road, Bangor, LL57 4AH
• Sold Aug 2014£199,950 | 4 Bed HouseFoelas, Tanrhiw Road, Bangor, LL57 4AWFoelas, Tanrhiw Road, Bangor, LL57 4AW
• Sold May 2013£187,500 | 4 Bed HouseCarwyn, Bangor, LL57 4ARCarwyn, Bangor, LL57 4AR
• Sold Apr 2012£159,500 | 4 Bed House5 Tynlon, Felin Hen Road, Bangor, LL57 4BB5 Tynlon, Felin Hen Road, Bangor, LL57 4BB
• Sold Oct 2007£205,000 | 4 Bed HouseTy Uchaf, Bangor, LL57 4PLTy Uchaf, Bangor, LL57 4PL

Of the 110 addresses on Tregarth, Bangor, LL57, Janvallyn, Bangor comes out as the 34th largest and the 46th most expensive in our analysis of the public data.

It is also £50k more expensive than the average property across the LL57 district.

• Bangor (Gwynedd)

  |

  4.9 km away
• Llanfairpwll

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  8.5 km away
• Llanfairfechan

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  11.0 km away

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