According to data from HM Land Registry, 31, Duffryn Avenue, Cardiff sits on a plot of 413 m².

We have plot size data on 21 out of 21 other houses in the postcode and 31, Duffryn Avenue, Cardiff sits on the 4th largest plot.

31, Duffryn Avenue, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Sep 2016.

The property is 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, 31, Duffryn Avenue, Cardiff was last sold on 9th December 2016 for £350,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since December 2016, the market for similar properties has risen by 9.1%.

• Sold Dec 2016£350,000

According to the Land Registry and our network of Estate Agents, there have been 92 sales of properties similar to 31, Duffryn Avenue, Cardiff within a radius of 640 metres since 2014.

The most recent example is 41, Torrens Drive, Cardiff, CF23 6DR, a leasehold house which sold for £360,000 on the 12th November 2025.

Read more about house prices in CF23.

• Sold Nov 2025£360,000 | 3 Bed House41, Torrens Drive, Cardiff, CF23 6DR41, Torrens Drive, Cardiff, CF23 6DR
• Sold Oct 2025£490,000 | 4 Bed House57, Celyn Avenue, Cardiff, CF23 6EJ57, Celyn Avenue, Cardiff, CF23 6EJ
• Sold Mar 2025£425,000 | 3 Bed House19, Carnegie Drive, Cardiff, CF23 6DH19, Carnegie Drive, Cardiff, CF23 6DH
• Sold Feb 2025£385,000 | 3 Bed House41, Gwynant Crescent, Cardiff, CF23 6LT41, Gwynant Crescent, Cardiff, CF23 6LT
• Sold Dec 2024£380,000 | 3 Bed House16, Carnegie Drive, Cardiff, CF23 6DH16, Carnegie Drive, Cardiff, CF23 6DH
• Sold Dec 2024£425,000 | 3 Bed House89, Ogwen Drive, Cardiff, CF23 6LJ89, Ogwen Drive, Cardiff, CF23 6LJ
• Sold Sep 2024£395,000 | 3 Bed House101, Ogwen Drive, Cardiff, CF23 6LJ101, Ogwen Drive, Cardiff, CF23 6LJ
• Sold Jul 2023£440,000 | 4 Bed House15, Duffryn Avenue, Cardiff, CF23 6LE15, Duffryn Avenue, Cardiff, CF23 6LE
• Sold Apr 2023£390,000 | 3 Bed House55, Celyn Avenue, Cardiff, CF23 6EJ55, Celyn Avenue, Cardiff, CF23 6EJ
• Sold Mar 2023£382,500 | 3 Bed House18, Leven Close, Cardiff, CF23 6DN18, Leven Close, Cardiff, CF23 6DN
• Sold Dec 2022£475,000 | 4 Bed House9, Carnegie Drive, Cardiff, CF23 6DH9, Carnegie Drive, Cardiff, CF23 6DH
• Sold Nov 2021£365,000 | 3 Bed House1, Duffryn Avenue, Cardiff, CF23 6LE1, Duffryn Avenue, Cardiff, CF23 6LE
• Sold Jul 2020£338,000 | 3 Bed House45, Ogwen Drive, Cardiff, CF23 6LJ45, Ogwen Drive, Cardiff, CF23 6LJ
• Sold Aug 2019£377,500 | 4 Bed House49, Ogwen Drive, Cardiff, CF23 6LJ49, Ogwen Drive, Cardiff, CF23 6LJ
• Sold Jul 2019£340,000 | 3 Bed House39, Gwynant Crescent, Cardiff, CF23 6LT39, Gwynant Crescent, Cardiff, CF23 6LT
• Sold Apr 2019£315,000 | 3 Bed House10, Llyn Close, Cardiff, CF23 6LG10, Llyn Close, Cardiff, CF23 6LG
• Sold Jan 2019£385,000 | 3 Bed House12, Padarn Close, Cardiff, CF23 6ER12, Padarn Close, Cardiff, CF23 6ER
• Sold Aug 2017£525,000 | 3 Bed House5, Padarn Close, Cardiff, CF23 6ER5, Padarn Close, Cardiff, CF23 6ER
• Sold Apr 2016£320,000 | 3 Bed House26, Padarn Close, Cardiff, CF23 6ER26, Padarn Close, Cardiff, CF23 6ER
• Sold Aug 2014£226,000 | 3 Bed House6, Llyn Close, Cardiff, CF23 6LG6, Llyn Close, Cardiff, CF23 6LG

Duffryn Avenue, Cardiff, CF23 has a total of 52 addresses. According to our analysis of all the public data, 31, Duffryn Avenue, Cardiff is the 40th largest and the 47th most expensive property on the street.

When compared to the postcode district it is £52k more expensive than the average property in CF23.

• Heath High Level

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  700 m away
• Heath Low Level

  |

  800 m away
• Ty Glas

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  1.8 km away

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