According to data from HM Land Registry, 19, Lon-Y-Celyn, Treharris sits on a plot of 447 m².

We have plot size data on 51 out of 52 other houses in the postcode and 19, Lon-Y-Celyn, Treharris sits on the largest plot.

19, Lon-Y-Celyn, Treharris has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 06 Feb 2015.

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 37 sales of properties similar to 19, Lon-Y-Celyn, Treharris within a radius of 820 metres since 2009.

The most recent example is 17, Ashgrove Terrace, Treharris, CF46 6LS, a freehold house which sold for £249,950 on the 29th August 2025.

Read more about house prices in CF46.

• 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 Oct 2024£207,500 | 2 Bed House3A, The Oaks, Treharris, CF46 5HQ3A, The Oaks, Treharris, CF46 5HQ
• Sold Oct 2023£203,000 | 3 Bed House34, Tawel Fan, Treharris, CF46 6EH34, Tawel Fan, Treharris, CF46 6EH
• Sold Mar 2022£118,000 | 3 Bed House30, Commercial Street, Treharris, CF46 6NF30, Commercial Street, Treharris, CF46 6NF
• Sold Sep 2021£195,000 | 3 Bed House54, Tawel Fan, Treharris, CF46 6EH54, Tawel Fan, Treharris, CF46 6EH
• Sold Aug 2020£139,950 | 3 Bed House1, Ffos Y Cerridden, Treharris, CF46 6HQ1, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold Mar 2020£145,500 | 3 Bed House38, Heol Tasker, Treharris, CF46 6JB38, Heol Tasker, Treharris, CF46 6JB
• Sold Jan 2020£54,129 | 3 Bed House42, Tawel Fan, Treharris, CF46 6EH42, Tawel Fan, Treharris, CF46 6EH
• Sold Nov 2019£139,995 | 3 Bed House53, Tawel Fan, Treharris, CF46 6EH53, Tawel Fan, Treharris, CF46 6EH
• Sold Jun 2017£102,000 | 3 Bed House31, Ffos Y Cerridden, Treharris, CF46 6HQ31, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold Dec 2016£145,000 | 3 Bed House66, Tawel Fan, Treharris, CF46 6EH66, Tawel Fan, Treharris, CF46 6EH
• Sold Nov 2013£149,000 | 3 Bed House55, Ashgrove Terrace, Treharris, CF46 6LS55, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Sep 2012£89,250 | 3 Bed House32, Tawel Fan, Treharris, CF46 6EH32, Tawel Fan, Treharris, CF46 6EH
• Sold Jun 2012£82,000 | 3 Bed House44, Tawel Fan, Treharris, CF46 6EH44, Tawel Fan, Treharris, CF46 6EH
• Sold Dec 2011£135,000 | 3 Bed House19, Ashgrove Terrace, Treharris, CF46 6LS19, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Jun 2011£138,000 | 3 Bed House43, Ashgrove Terrace, Treharris, CF46 6LS43, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Nov 2009£110,000 | 3 Bed House47, Tawel Fan, Treharris, CF46 6EH47, Tawel Fan, Treharris, CF46 6EH

Lon-Y-Celyn, Nelson, Treharris, CF46 has a total of 52 addresses. According to our analysis of all the public data, 19, Lon-Y-Celyn, Treharris is the 32nd largest and the 32nd most expensive property on the street.

When compared to the postcode district it is £60k more expensive than the average property in CF46.

• Quakers Yard

  |

  2.4 km away
• Abercynon

  |

  2.8 km away
• Ystrad Mynach

  |

  3.7 km away

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