21, Cilgant Eirin, Porth has an Energy Performance Rating (EPC) of A. This is based on the most recent assessment, dated 16 Feb 2021.

The property is not connected to mains gas and has high performance glazing. It is heated using ground source heat pump (underfloor heating and radiators, pipes in screed above insulation, electric).

The most recent sale of 21, Cilgant Eirin, Porth completed on 19th March 2021 at £148,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have dropped by 32.7% over the period since March 2021.

• Sold Mar 2021£148,000

Since 2018 43 properties similar to 21, Cilgant Eirin, Porth have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 3rd December 2025, was 22, Mountain View, Porth, CF39 8JF, a freehold house which sold for £204,000.

Read more about house prices in CF39.

• Sold Dec 2025£204,000 | 3 Bed House22, Mountain View, Porth, CF39 8JF22, Mountain View, Porth, CF39 8JF
• Sold Feb 2025£345,000 | 3 Bed House36, Cedar Wood Drive, Porth, CF39 8JB36, Cedar Wood Drive, Porth, CF39 8JB
• Sold Feb 2025£188,000 | 3 Bed House17, Larch Wood, Porth, CF39 8JJ17, Larch Wood, Porth, CF39 8JJ
• Sold Jan 2025£195,000 | 3 Bed House4, Larch Wood, Porth, CF39 8JJ4, Larch Wood, Porth, CF39 8JJ
• Sold Jun 2024£210,000 | 3 Bed House3, Larch Wood, Porth, CF39 8JJ3, Larch Wood, Porth, CF39 8JJ
• Sold Mar 2024£58,800 | 3 Bed House25, Cilgant Eirin, Porth, CF39 8QD25, Cilgant Eirin, Porth, CF39 8QD
• Sold Feb 2024£58,500 | 3 Bed House29, Cilgant Eirin, Porth, CF39 8QD29, Cilgant Eirin, Porth, CF39 8QD
• Sold Jan 2024£200,000 | 3 Bed House4, Cedar Wood Drive, Porth, CF39 8JB4, Cedar Wood Drive, Porth, CF39 8JB
• Sold Apr 2023£135,000 | 3 Bed House9, Hazel Grove, Porth, CF39 8JP9, Hazel Grove, Porth, CF39 8JP
• Sold Feb 2023£67,500 | 3 Bed House1, Heol Elai, Porth, CF39 8QE1, Heol Elai, Porth, CF39 8QE
• Sold May 2022£185,000 | 3 Bed House14, Cedar Way, Porth, CF39 8JN14, Cedar Way, Porth, CF39 8JN
• Sold Feb 2022£165,000 | 3 Bed House11, Stryd Afan, Porth, CF39 8QJ11, Stryd Afan, Porth, CF39 8QJ
• Sold Feb 2022£165,000 | 3 Bed House10, Stryd Afan, Porth, CF39 8QJ10, Stryd Afan, Porth, CF39 8QJ
• Sold Dec 2021£181,500 | 3 Bed House6, Elm Wood Drive, Porth, CF39 8JA6, Elm Wood Drive, Porth, CF39 8JA
• Sold Dec 2021£165,000 | 3 Bed House1, Stryd Afan, Porth, CF39 8QJ1, Stryd Afan, Porth, CF39 8QJ
• Sold Dec 2021£165,000 | 3 Bed House2, Stryd Afan, Porth, CF39 8QJ2, Stryd Afan, Porth, CF39 8QJ
• Sold Dec 2021£176,000 | 3 Bed House23, Cedar Way, Porth, CF39 8JN23, Cedar Way, Porth, CF39 8JN
• Sold Oct 2021£174,995 | 3 Bed House8, Elm Wood Drive, Porth, CF39 8JA8, Elm Wood Drive, Porth, CF39 8JA
• Sold Oct 2020£136,000 | 3 Bed House8, Hazel Grove, Porth, CF39 8JP8, Hazel Grove, Porth, CF39 8JP
• Sold Sep 2018£160,000 | 3 Bed House28, Elm Wood Drive, Porth, CF39 8JA28, Elm Wood Drive, Porth, CF39 8JA

Of the 37 addresses on Cilgant Eirin, Tonyrefail, Porth, CF39, 21, Cilgant Eirin, Porth comes out as the 28th largest and the 27th most expensive in our analysis of the public data.

It is also £37k more expensive than the average property across the CF39 district.

• Dinas (Rhondda)

  |

  4.6 km away
• Llanharan

  |

  4.6 km away
• Tonypandy

  |

  4.6 km away

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