According to data from HM Land Registry, 21, Penmaes, Cardiff sits on a plot of 429 m².

We have plot size data on 30 out of 32 other houses in the postcode and 21, Penmaes, Cardiff sits on the 6th largest plot.

21, Penmaes, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Apr 2025.

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 the Land Registry and our network of Estate Agents, there have been 141 sales of properties similar to 21, Penmaes, Cardiff within a radius of 2.1 kilometres since 2014.

The most recent example is 6, Penmaes, Cardiff, CF15 9QS, a freehold house which sold for £435,000 on the 25th September 2025.

Read more about house prices in CF15.

• Sold Sep 2025£435,000 | 4 Bed House6, Penmaes, Cardiff, CF15 9QS6, Penmaes, Cardiff, CF15 9QS
• Sold Aug 2025£470,000 | 4 Bed House31, Lon Y Fro, Cardiff, CF15 9TE31, Lon Y Fro, Cardiff, CF15 9TE
• Sold Aug 2025£435,000 | 3 Bed House35, Bron Haul, Cardiff, CF15 9TA35, Bron Haul, Cardiff, CF15 9TA
• Sold Feb 2025£405,000 | 4 Bed House100, Maes Y Sarn, Cardiff, CF15 9QR100, Maes Y Sarn, Cardiff, CF15 9QR
• Sold Oct 2024£440,000 | 4 Bed House32, Bron Haul, Cardiff, CF15 9TA32, Bron Haul, Cardiff, CF15 9TA
• Sold Sep 2024£360,000 | 4 Bed House24, Bronllwyn, Cardiff, CF15 9QL24, Bronllwyn, Cardiff, CF15 9QL
• Sold May 2024£375,000 | 4 Bed House3, Bryn Yr Eglwys, Cardiff, CF15 9QW3, Bryn Yr Eglwys, Cardiff, CF15 9QW
• Sold Nov 2023£460,000 | 4 Bed House11, Lon Y Fro, Cardiff, CF15 9TE11, Lon Y Fro, Cardiff, CF15 9TE
• Sold Aug 2023£505,000 | 4 Bed House9, Field Terrace, Cardiff, CF15 9PX9, Field Terrace, Cardiff, CF15 9PX
• Sold Jun 2023£440,000 | 4 Bed House24, Bron Haul, Cardiff, CF15 9TA24, Bron Haul, Cardiff, CF15 9TA
• Sold Oct 2022£405,000 | 4 Bed House23, Bronllwyn, Cardiff, CF15 9QL23, Bronllwyn, Cardiff, CF15 9QL
• Sold Mar 2021£270,000 | 3 Bed House7, Maes Y Sarn, Cardiff, CF15 9QQ7, Maes Y Sarn, Cardiff, CF15 9QQ
• Sold Jan 2021£350,000 | 4 Bed House19, Lon Y Fro, Cardiff, CF15 9TE19, Lon Y Fro, Cardiff, CF15 9TE
• Sold Dec 2020£325,000 | 4 Bed House10, Penmaes, Cardiff, CF15 9QS10, Penmaes, Cardiff, CF15 9QS
• Sold Feb 2019£305,000 | 3 Bed House3, Lon Y Fro, Cardiff, CF15 9TE3, Lon Y Fro, Cardiff, CF15 9TE
• Sold Nov 2018£283,500 | 4 Bed House12, Penmaes, Cardiff, CF15 9QS12, Penmaes, Cardiff, CF15 9QS
• Sold Jul 2017£240,000 | 3 Bed House6, Maes Y Sarn, Cardiff, CF15 9QQ6, Maes Y Sarn, Cardiff, CF15 9QQ
• Sold Apr 2015£225,000 | 4 Bed House34, Bronllwyn, Cardiff, CF15 9QL34, Bronllwyn, Cardiff, CF15 9QL
• Sold Mar 2015£290,000 | 3 Bed House28, Bronllwyn, Cardiff, CF15 9QL28, Bronllwyn, Cardiff, CF15 9QL
• Sold Dec 2014£245,000 | 4 Bed House44, Bronllwyn, Cardiff, CF15 9QL44, Bronllwyn, Cardiff, CF15 9QL

Penmaes, Pentyrch, Cardiff, CF15 has a total of 32 addresses. According to our analysis of all the public data, 21, Penmaes, Cardiff is the 30th largest and the 30th most expensive property on the street.

When compared to the postcode district it is £25k more expensive than the average property in CF15.

• Taffs Well

  |

  2.8 km away
• Radyr

  |

  3.8 km away
• Trefforest Estate

  |

  4.4 km away

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