| 36, Allen Street, Mountain Ash | Freehold | 78 m² | £62,000 (2019) |
| 37 Allen Street, Mountain Ash | Freehold | 71 m² | £90,000 (2022) |
| 38, Allen Street, Mountain Ash | Freehold | 88 m² | £149,950 (2020) |
| 39, Allen Street, Mountain Ash | Freehold | 108 m² | £160,000 (2021) |
| 40 Allen Street, Mountain Ash | Freehold | 102 m² | £40,000 (2001) |
| 42 Allen Street, Mountain Ash | Freehold | 74 m² | £85,000 (2024) |
| 45, Allen Street, Mountain Ash | Freehold | 67 m² | £125,000 (2022) |
| 47 Allen Street, Mountain Ash | Freehold | 75 m² | £115,000 (2023) |
| 49, Allen Street, Mountain Ash | Freehold | 68 m² | £137,000 (2019) |
| 50, Allen Street, Mountain Ash | Freehold | 128 m² | £145,000 (2020) |
| 51, Allen Street, Mountain Ash | Freehold | 137 m² | £125,000 (2015) |
| 56, Allen Street, Mountain Ash | Freehold | 103 m² | £98,800 (2019) |
| 57, Allen Street, Mountain Ash | Freehold | 129 m² | £215,000 (2021) |
| 58, Allen Street, Mountain Ash | Freehold | 78 m² | £112,500 (2019) |
| 59 Allen Street, Mountain Ash | Freehold | 102 m² | £189,998 (2026) |
| 62, Allen Street, Mountain Ash | - | 128 m² | - |
| 63 Allen Street, Mountain Ash | Freehold | 132 m² | £193,000 (2022) |
| Melbourne House, 52 Allen Street, Mountain Ash | - | 237 m² | - |
| Ty Cerrig, Allen Street, Mountain Ash | Freehold | 79 m² | £135,000 (2022) |
