According to data from HM Land Registry, 27, Trefonwys, Bangor sits on a plot of 689 m².

We have plot size data on 31 out of 33 other houses in the postcode and 27, Trefonwys, Bangor sits on the 17th largest plot.

27, Trefonwys, Bangor has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 21 Apr 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).

According to HM Land Registry, 27, Trefonwys, Bangor was last sold on 16th July 2015 for £280,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since July 2015, the market for similar properties has risen by 8.5%.

• Sold Jul 2015£280,000

According to the Land Registry and our network of Estate Agents, there have been 42 sales of properties similar to 27, Trefonwys, Bangor within a radius of 680 metres since 2013.

The most recent example is 3, Lon Y Bryn, Bangor, LL57 2LH, a freehold house which sold for £410,000 on the 15th August 2025.

Read more about house prices in LL57.

• Sold Aug 2025£410,000 | 4 Bed House3, Lon Y Bryn, Bangor, LL57 2LH3, Lon Y Bryn, Bangor, LL57 2LH
• Sold Mar 2025£410,000 | 4 Bed House36, Maes Berea, Bangor, LL57 4TQ36, Maes Berea, Bangor, LL57 4TQ
• Sold Jan 2025£299,500 | 4 Bed House22, Belmont Drive, Bangor, LL57 2HS22, Belmont Drive, Bangor, LL57 2HS
• Sold Dec 2024£385,000 | 4 Bed House6, Trefonwys, Bangor, LL57 2HU6, Trefonwys, Bangor, LL57 2HU
• Sold Jan 2024£417,500 | 4 Bed HouseHafod, Lon Y Ffrwd, Bangor, LL57 2LGHafod, Lon Y Ffrwd, Bangor, LL57 2LG
• Sold May 2023£330,000 | 4 Bed House9, Trefonwys, Bangor, LL57 2HU9, Trefonwys, Bangor, LL57 2HU
• Sold Nov 2022£282,500 | 4 Bed House48, Bryn Eithinog, Bangor, LL57 2LA48, Bryn Eithinog, Bangor, LL57 2LA
• Sold Sep 2022£385,000 | 4 Bed House11, Lon Y Bryn, Bangor, LL57 2LH11, Lon Y Bryn, Bangor, LL57 2LH
• Sold Dec 2021£330,000 | 4 Bed House5, Trefonwys, Bangor, LL57 2HU5, Trefonwys, Bangor, LL57 2HU
• Sold May 2021£273,000 | 4 Bed House46, Bryn Eithinog, Bangor, LL57 2LA46, Bryn Eithinog, Bangor, LL57 2LA
• Sold Feb 2021£278,000 | 4 Bed House26, Trefonwys, Bangor, LL57 2HU26, Trefonwys, Bangor, LL57 2HU
• Sold Jan 2021£257,500 | 4 Bed House9, Belmont Drive, Bangor, LL57 2HS9, Belmont Drive, Bangor, LL57 2HS
• Sold Oct 2018£260,000 | 4 Bed House32, Trefonwys, Bangor, LL57 2HU32, Trefonwys, Bangor, LL57 2HU
• Sold Apr 2018£289,950 | 4 Bed House17, Ffriddoedd Road, Bangor, LL57 2TW17, Ffriddoedd Road, Bangor, LL57 2TW
• Sold Nov 2017£285,000 | 4 Bed House24, Lon Y Bryn, Bangor, LL57 2LH24, Lon Y Bryn, Bangor, LL57 2LH
• Sold May 2017£204,000 | 4 Bed House12, Bryn Eithinog, Bangor, LL57 2LA12, Bryn Eithinog, Bangor, LL57 2LA
• Sold Apr 2017£190,000 | 4 Bed House13, Bryn Eithinog, Bangor, LL57 2LA13, Bryn Eithinog, Bangor, LL57 2LA
• Sold Aug 2016£240,000 | 5 Bed House17, Trefonwys, Bangor, LL57 2HU17, Trefonwys, Bangor, LL57 2HU
• Sold Aug 2014£210,000 | 4 Bed House13, Lon Y Meillion, Bangor, LL57 2LE13, Lon Y Meillion, Bangor, LL57 2LE
• Sold Jan 2013£230,000 | 4 Bed House2, Trefonwys, Bangor, LL57 2HU2, Trefonwys, Bangor, LL57 2HU

Trefonwys, Bangor, LL57 has a total of 33 addresses. According to our analysis of all the public data, 27, Trefonwys, Bangor is the 16th largest and the 13th most expensive property on the street.

When compared to the postcode district it is £149k more expensive than the average property in LL57.

• Bangor (Gwynedd)

  |

  900 m away
• Llanfairpwll

  |

  4.0 km away
• Llanfairfechan

  |

  11.7 km away

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