| 1 Pentwyn Avenue, Mountain Ash | Freehold | 94 m² | £30,000 (2019) |
| 3, Pentwyn Avenue, Mountain Ash | Freehold | 84 m² | £50,000 (2019) |
| 9 Pentwyn Avenue, Mountain Ash | - | 80 m² | - |
| 13, Pentwyn Avenue, Mountain Ash | Freehold | 97 m² | £43,000 (2004) |
| 15, Pentwyn Avenue, Mountain Ash | Freehold | 84 m² | £40,000 (2013) |
| 17 Pentwyn Avenue, Tyntetown, Abercynon, Abercynon | Freehold | 77 m² | £60,000 (2021) |
| 19, Pentwyn Avenue, Mountain Ash | - | 98 m² | - |
| 21 Pentwyn Avenue, Mountain Ash | - | 96 m² | - |
| 23 Pentwyn Avenue, Mountain Ash | Freehold | 92 m² | £12,000 (1996) |
| 25, Pentwyn Avenue, Mountain Ash | Freehold | 91 m² | £66,500 (2009) |
| 29 Pentwyn Avenue, Mountain Ash | Freehold | 76 m² | £28,950 (2004) |
| 31 Pentwyn Avenue, Mountain Ash | Freehold | 389 m² | £36,000 (2021) |
| 33A Pentwyn Avenue, Mountain Ash | - | 35 m² | - |
| 35, Pentwyn Avenue, Mountain Ash | Freehold | 73 m² | £39,999 (2017) |
| 37, Pentwyn Avenue, Mountain Ash | Freehold | 74 m² | £66,000 (2019) |
| 41 Pentwyn Avenue, Mountain Ash | Freehold | 92 m² | £70,000 (2024) |
| 43 Pentwyn Avenue, Tyntetown, Abercynon | Freehold | 95 m² | £36,000 (2015) |
| 45 Pentwyn Avenue, Mountain Ash | Freehold | 77 m² | £45,000 (2014) |
| 49, Pentwyn Avenue, Mountain Ash | Freehold | 76 m² | £62,000 (2019) |
| 51, Pentwyn Avenue, Mountain Ash | - | 75 m² | - |
| 53, Pentwyn Avenue, Mountain Ash | Freehold | 72 m² | £21,000 (2013) |
| 55, Pentwyn Avenue, Mountain Ash | Freehold | 77 m² | £35,000 (2022) |
| 59, Pentwyn Avenue, Mountain Ash | Freehold | 84 m² | £165,000 (2023) |
| 63, Pentwyn Avenue, Mountain Ash | Freehold | 82 m² | £35,000 (2019) |
| 69, Pentwyn Avenue, Mountain Ash | - | 79 m² | - |
| 75, Pentwyn Avenue, Mountain Ash | Freehold | 117 m² | £75,000 (2021) |
| 77 Pentwyn Avenue, Mountain Ash | - | 85 m² | - |
| 79 Pentwyn Avenue, Matthewstown, Mid Glamorgan | - | 82 m² | - |
| 91, Pentwyn Avenue, Mountain Ash | Freehold | 76 m² | £14,700 (2002) |
| 93, Pentwyn Avenue, Mountain Ash | Freehold | 83 m² | £67,000 (2020) |
| 97, Pentwyn Avenue, Mountain Ash | Freehold | 96 m² | £57,000 (2011) |
| 99, Pentwyn Avenue, Mountain Ash | Freehold | 91 m² | £44,000 (2020) |
| 101, Pentwyn Avenue, Mountain Ash | Freehold | 70 m² | £79,000 (2023) |
| 103, Pentwyn Avenue, Mountain Ash | Freehold | 98 m² | £65,000 (2023) |
| 109 Pentwyn Avenue, Tyntetown, Abercynon | Freehold | 80 m² | £50,000 (2006) |
| 111 Pentwyn Avenue, Mountain Ash | Freehold | 80 m² | £39,999 (2019) |
| 113, Pentwyn Avenue, Mountain Ash | Freehold | 79 m² | £47,000 (2017) |
| 115 Pentwyn Avenue, Mountain Ash | - | 77 m² | - |
| 117 Pentwyn Avenue, Mountain Ash | - | 83 m² | - |
| 119 Pentwyn Avenue, Tyntetown, Abercynon, Abercynon | Freehold | 81 m² | £50,250 (2021) |
| 121, Pentwyn Avenue, Mountain Ash | Freehold | 70 m² | £35,500 (2018) |
| 123 Pentwyn Avenue, Mountain Ash | Freehold | 80 m² | £60,500 (2025) |
| 125 Pentwyn Avenue, Matthewstown, Mid Glamorgan | - | 73 m² | - |
| 127, Pentwyn Avenue, Mountain Ash | - | 77 m² | - |
| 129, Pentwyn Avenue, Mountain Ash | - | 75 m² | - |
| 131 Pentwyn Avenue, Mountain Ash | Freehold | 96 m² | £90,000 (2023) |
