According to data from HM Land Registry, 11, Castleton Avenue, Treorchy sits on a plot of 480 m².

We have plot size data on 27 out of 30 other houses in the postcode and 11, Castleton Avenue, Treorchy sits on the 5th largest plot.

11, Castleton Avenue, Treorchy has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 06 Aug 2019.

The property is connected to mains gas and has some double glazing. It is heated using a boiler and radiators (mains gas, boiler and radiators, dual fuel (mineral and wood)).

According to the Land Registry and our network of Estate Agents, there have been 19 sales of properties similar to 11, Castleton Avenue, Treorchy within a radius of 1.5 kilometres since 2010.

The most recent example is 24, St. Albans Road, Treorchy, CF42 5DD, a freehold house which sold for £165,000 on the 6th February 2026.

Read more about house prices in CF42.

• Sold Feb 2026£165,000 | 4 Bed House24, St. Albans Road, Treorchy, CF42 5DD24, St. Albans Road, Treorchy, CF42 5DD
• Sold Oct 2025£269,950 | 4 Bed House58, Miskin Street, Treorchy, CF42 5LR58, Miskin Street, Treorchy, CF42 5LR
• Sold Aug 2025£125,000 | 4 Bed House9, Stuart Street, Treorchy, CF42 5PR9, Stuart Street, Treorchy, CF42 5PR
• Sold Mar 2025£98,000 | 4 Bed House29, Stuart Street, Treorchy, CF42 5PR29, Stuart Street, Treorchy, CF42 5PR
• Sold Oct 2024£182,000 | 4 Bed House182, Dumfries Street, Treorchy, CF42 5PN182, Dumfries Street, Treorchy, CF42 5PN
• Sold Dec 2023£164,000 | 4 Bed House21, St. Albans Road, Treorchy, CF42 5DD21, St. Albans Road, Treorchy, CF42 5DD
• Sold May 2023£205,000 | 4 Bed House36, Blaenrhondda Road, Treorchy, CF42 5SP36, Blaenrhondda Road, Treorchy, CF42 5SP
• Sold Aug 2022£168,000 | 4 Bed House8, Stuart Street, Treorchy, CF42 5PR8, Stuart Street, Treorchy, CF42 5PR
• Sold Nov 2017£169,995 | 4 Bed House14, Bute Street, Treorchy, CF42 5NP14, Bute Street, Treorchy, CF42 5NP
• Sold Oct 2016£60,490 | 4 Bed House17, Dunraven Street, Treorchy, CF42 5BG17, Dunraven Street, Treorchy, CF42 5BG
• Sold Oct 2015£79,000 | 4 Bed House187, Dumfries Street, Treorchy, CF42 5PN187, Dumfries Street, Treorchy, CF42 5PN
• Sold Jun 2014£70,000 | 4 Bed House13, Blaenrhondda Road, Treorchy, CF42 5SP13, Blaenrhondda Road, Treorchy, CF42 5SP
• Sold Jun 2014£69,500 | 4 Bed House25, Stuart Street, Treorchy, CF42 5PR25, Stuart Street, Treorchy, CF42 5PR
• Sold Jul 2012£67,000 | 4 Bed House5, Stuart Street, Treorchy, CF42 5PR5, Stuart Street, Treorchy, CF42 5PR
• Sold Jun 2012£125,000 | 4 Bed House5, Dumfries Street, Treorchy, CF42 5PL5, Dumfries Street, Treorchy, CF42 5PL
• Sold Jun 2011£75,000 | 4 Bed House1, Castleton Avenue, Treorchy, CF42 5SS1, Castleton Avenue, Treorchy, CF42 5SS
• Sold Jun 2011£120,000 | 4 Bed House18, Bute Street, Treorchy, CF42 5NP18, Bute Street, Treorchy, CF42 5NP
• Sold Oct 2010£87,000 | 4 Bed House9, Castleton Avenue, Treorchy, CF42 5SS9, Castleton Avenue, Treorchy, CF42 5SS
• Sold Oct 2010£120,000 | 4 Bed House4, Castleton Avenue, Treorchy, CF42 5SS4, Castleton Avenue, Treorchy, CF42 5SS

Castleton Avenue, Treherbert, Treorchy, CF42 has a total of 30 addresses. According to our analysis of all the public data, 11, Castleton Avenue, Treorchy is the 6th largest and the 6th most expensive property on the street.

When compared to the postcode district it is £30k more expensive than the average property in CF42.

• Treherbert

  |

  1.6 km away
• Ynyswen

  |

  2.8 km away
• Treorchy

  |

  4.2 km away

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