| 18 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Mar 2025 | £330,000 | Detached | Freehold |
| Plot 3 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Jul 2024 | £100,000 | Other property | Freehold |
| 21 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Mar 2024 | £160,000 | Detached | Freehold |
| Plot 6 Trem Y Duffryn, Mountain Ash, CF45 4AQ | Feb 2024 | £42,000 | Other property | Freehold |
| Ty Gwyn Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2023 | £515,000 | Detached | Freehold |
| 30 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2022 | £282,500 | Detached | Freehold |
| 24 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Jul 2022 | £200,000 | Semi-detached | Freehold |
| 14 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2021 | £305,000 | Detached | Freehold |
| 3 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Nov 2020 | £160,000 | Detached | Freehold |
| 20 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Oct 2019 | £260,000 | Detached | Freehold |
| 13 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Jul 2019 | £236,000 | Detached | Freehold |
| 28 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Apr 2019 | £173,000 | Detached | Freehold |
| Oakmont Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Sep 2018 | £85,000 | Other property | Freehold |
| Amber Lee House Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Jan 2018 | £80,000 | Other property | Freehold |
| 17 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2016 | £78,500 | Flat / maisonette | Freehold |
| 1 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2015 | £155,900 | Detached | Freehold |
| 16 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | May 2013 | £120,000 | Semi-detached | Freehold |
| 26 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Apr 2009 | £195,000 | Detached | Freehold |
| 13A Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Aug 2007 | £164,950 | Detached | Freehold |
| 22 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Jun 2007 | £75,000 | Terraced | Freehold |
| 15 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Mar 2007 | £139,950 | Semi-detached | Freehold |
| 12 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Mar 2007 | £149,950 | Detached | Freehold |
| 19 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Mar 2007 | £204,950 | Detached | Freehold |
| 10 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Feb 2007 | £149,950 | Detached | Freehold |
| 23 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Dec 2006 | £139,950 | Semi-detached | Freehold |
| 7 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Nov 2006 | £169,950 | Semi-detached | Freehold |
| 6 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Nov 2006 | £167,000 | Semi-detached | Freehold |
| 25 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Nov 2006 | £204,950 | Detached | Freehold |
| 4 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Sep 2006 | £139,950 | Detached | Freehold |
| 27 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Aug 2006 | £204,950 | Detached | Freehold |
| 2 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Aug 2006 | £120,000 | Detached | Freehold |
| 5 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Aug 2006 | £134,950 | Detached | Freehold |
| 29 Trem Y Dyffryn, Mountain Ash, CF45 4AQ | Aug 2006 | £165,000 | Detached | Freehold |