| 59 Allen Street, Mountain Ash, CF45 4BB | Mar 2026 | £189,998 | Semi-detached | Freehold |
| 42 Allen Street, Mountain Ash, CF45 4BB | Sep 2024 | £85,000 | Terraced | Freehold |
| 47 Allen Street, Mountain Ash, CF45 4BB | Aug 2023 | £115,000 | Terraced | Freehold |
| 63 Allen Street, Mountain Ash, CF45 4BB | Sep 2022 | £193,000 | Semi-detached | Freehold |
| 37 Allen Street, Mountain Ash, CF45 4BB | Aug 2022 | £90,000 | Terraced | Freehold |
| 45 Allen Street, Mountain Ash, CF45 4BB | Jun 2022 | £125,000 | Terraced | Freehold |
| Ty Cerrig Allen Street, Mountain Ash, CF45 4BB | Apr 2022 | £135,000 | Semi-detached | Freehold |
| 44 Allen Street, Mountain Ash, CF45 4BB | Feb 2022 | £85,000 | Terraced | Freehold |
| 57 Allen Street, Mountain Ash, CF45 4BB | Dec 2021 | £215,000 | Terraced | Freehold |
| 39 Allen Street, Mountain Ash, CF45 4BB | Apr 2021 | £160,000 | Semi-detached | Freehold |
| 38 Allen Street, Mountain Ash, CF45 4BB | Oct 2020 | £149,950 | Semi-detached | Freehold |
| 50 Allen Street, Mountain Ash, CF45 4BB | Jan 2020 | £145,000 | Semi-detached | Freehold |
| 36 Allen Street, Mountain Ash, CF45 4BB | Nov 2019 | £62,000 | Terraced | Freehold |
| 49 Allen Street, Mountain Ash, CF45 4BB | Sep 2019 | £137,000 | Semi-detached | Freehold |
| 56 Allen Street, Mountain Ash, CF45 4BB | Feb 2019 | £98,800 | Semi-detached | Freehold |
| 58 Allen Street, Mountain Ash, CF45 4BB | Jan 2019 | £112,500 | Semi-detached | Freehold |
| 51 Allen Street, Mountain Ash, CF45 4BB | Mar 2015 | £125,000 | Semi-detached | Freehold |
| 48 Allen Street, Mountain Ash, CF45 4BB | Dec 2008 | £70,000 | Terraced | Freehold |
| 61 Allen Street, Mountain Ash, CF45 4BB | Feb 2004 | £135,000 | Semi-detached | Freehold |
| 40 Allen Street, Mountain Ash, CF45 4BB | Oct 2001 | £40,000 | Terraced | Freehold |
| 60 Allen Street, Mountain Ash, CF45 4BB | Feb 2000 | £68,000 | Semi-detached | Freehold |