21, Lon-Y-Celyn, Treharris occupies a 331 m² plot as recorded by HM Land Registry.

Of the 52 other houses in this postcode, 51 have recorded plot sizes, and this one ranks as the 5th largest.

21, Lon-Y-Celyn, Treharris has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 May 2014.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Land Registry records and our Estate Agent network show 111 sales of comparable properties within 830 metres of 21, Lon-Y-Celyn, Treharris since 2016.

Most recently, 5, Tawel Fan, Treharris, CF46 6EH, a freehold house, sold at £227,500 on the 5th June 2026.

Read more about house prices in CF46.

• Sold Jun 2026£227,500 | 3 Bed House5, Tawel Fan, Treharris, CF46 6EH5, Tawel Fan, Treharris, CF46 6EH
• Sold Apr 2026£230,000 | 3 Bed House8, Ffos Close, Treharris, CF46 6EL8, Ffos Close, Treharris, CF46 6EL
• Sold Mar 2026£240,000 | 3 Bed House29, Tawel Fan, Treharris, CF46 6EH29, Tawel Fan, Treharris, CF46 6EH
• Sold Feb 2026£259,950 | 3 Bed House61, Tawel Fan, Treharris, CF46 6EH61, Tawel Fan, Treharris, CF46 6EH
• Sold Jan 2026£190,000 | 3 Bed House2, Ffos Y Cerridden, Treharris, CF46 6HQ2, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold Dec 2025£245,000 | 3 Bed House11, Clos Cae Pwll, Treharris, CF46 6LA11, Clos Cae Pwll, Treharris, CF46 6LA
• Sold Aug 2025£249,950 | 3 Bed House17, Ashgrove Terrace, Treharris, CF46 6LS17, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Apr 2025£227,000 | 3 Bed House45, Ashgrove Terrace, Treharris, CF46 6LS45, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Dec 2024£222,500 | 3 Bed House41, Tawel Fan, Treharris, CF46 6EH41, Tawel Fan, Treharris, CF46 6EH
• Sold Dec 2024£225,000 | 3 Bed House16, Ashgrove Terrace, Treharris, CF46 6LS16, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Nov 2023£213,675 | 3 Bed House21, Ashgrove Terrace, Treharris, CF46 6LS21, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Oct 2023£203,000 | 3 Bed House34, Tawel Fan, Treharris, CF46 6EH34, Tawel Fan, Treharris, CF46 6EH
• Sold Aug 2023£255,000 | 3 Bed House16, Clos Cae Pwll, Treharris, CF46 6LA16, Clos Cae Pwll, Treharris, CF46 6LA
• Sold Apr 2022£145,000 | 3 Bed House19, Ffos Close, Treharris, CF46 6EL19, Ffos Close, Treharris, CF46 6EL
• Sold Sep 2021£195,000 | 3 Bed House54, Tawel Fan, Treharris, CF46 6EH54, Tawel Fan, Treharris, CF46 6EH
• Sold Oct 2020£155,000 | 3 Bed House64, Tawel Fan, Treharris, CF46 6EH64, Tawel Fan, Treharris, CF46 6EH
• Sold Oct 2020£180,000 | 3 Bed House23, Ashgrove Terrace, Treharris, CF46 6LS23, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Feb 2020£177,000 | 3 Bed House24, Ffos Close, Treharris, CF46 6EL24, Ffos Close, Treharris, CF46 6EL
• Sold Apr 2017£147,500 | 3 Bed House9, Ffos Close, Treharris, CF46 6EL9, Ffos Close, Treharris, CF46 6EL
• Sold Sep 2016£120,000 | 3 Bed House7, Ffos Close, Treharris, CF46 6EL7, Ffos Close, Treharris, CF46 6EL

Our analysis of the public data ranks 21, Lon-Y-Celyn, Treharris as the 7th largest and the 7th most expensive of the 52 addresses on Lon-Y-Celyn, Nelson, Treharris, CF46.

Against the CF46 postcode district average, it is £77k more expensive than the typical property.

• Quakers Yard

  |

  2.4 km away
• Abercynon

  |

  2.8 km away
• Ystrad Mynach

  |

  3.7 km away

Environment Agency data suggests this area has a Very Low risk of flooding.