According to data from HM Land Registry, 20A, Llandennis Avenue, Cardiff sits on a plot of 2,328 m².

We have plot size data on 11 out of 12 other houses in the postcode and 20A, Llandennis Avenue, Cardiff sits on the largest plot.

20A, Llandennis Avenue, Cardiff has an Energy Performance Rating (EPC) of A. This is based on the most recent assessment, dated 14 Nov 2025.

The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and underfloor heating, mains gas, Boiler and radiators, mains gas.

According to the Land Registry and our network of Estate Agents, there have been 767 property sales within 640 metres of 20A, Llandennis Avenue, Cardiff over the last 2 years.

The most recent example is 10, Llandennis Green, Cardiff, CF23 6JX, a freehold house which sold for £700,000 on the 30th June 2025.

Read more about house prices in CF23.

• Sold Jun 2025£700,000 | 4 Bed House10, Llandennis Green, Cardiff, CF23 6JX10, Llandennis Green, Cardiff, CF23 6JX
• Sold Jan 2016£585,000 | 5 Bed House11, Llandennis Green, Cardiff, CF23 6JX11, Llandennis Green, Cardiff, CF23 6JX
• Sold Feb 2007£370,000 | 4 Bed House9, Llandennis Green, Cardiff, CF23 6JX9, Llandennis Green, Cardiff, CF23 6JX

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

• Heath High Level

  |

  1.1 km away
• Heath Low Level

  |

  1.2 km away
• Llanishen

  |

  1.8 km away

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