| 5 Harlech Drive, Merthyr Tydfil | Freehold | 100 m² | £87,500 (2000) |
| 13, Harlech Drive, Merthyr Tydfil | Freehold | 100 m² | £200,000 (2018) |
| 15, Harlech Drive, Merthyr Tydfil | Freehold | 155 m² | £235,000 (2020) |
| 21 Harlech Drive, Merthyr Tydfil | Freehold | 179 m² | £380,000 (2025) |
| 23 Harlech Drive, Merthyr Tydfil | Freehold | 160 m² | £350,000 (2022) |
| 27, Harlech Drive, Merthyr Tydfil | - | 54 m² | - |
| 27A, Harlech Drive, Merthyr Tydfil | Freehold | 60 m² | £160,000 (2022) |
| 35, Harlech Drive, Merthyr Tydfil | Freehold | 58 m² | £34,000 (1999) |
| 35A Harlech Drive, Merthyr Tydfil | Freehold | 59 m² | £93,000 (2013) |
| 37, Harlech Drive, Merthyr Tydfil | - | 62 m² | - |
| 43, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £89,250 (2014) |
| 45, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £92,600 (2011) |
| 49, Harlech Drive, Merthyr Tydfil | - | 77 m² | - |
| 53, Harlech Drive, Merthyr Tydfil | - | 71 m² | - |
| 55 Harlech Drive, Merthyr Tydfil | Freehold | 69 m² | £102,500 (2007) |
| 57, Harlech Drive, Merthyr Tydfil | Freehold | 69 m² | £140,000 (2023) |
| 61, Harlech Drive, Merthyr Tydfil | Freehold | 73 m² | £83,000 (2016) |
| 63, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £83,000 (2018) |
| 65 Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £175,000 (2025) |
| 67, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £165,000 (2023) |
| 71, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £70,000 (2012) |
| 73 Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £130,000 (2023) |
| 75, Harlech Drive, Merthyr Tydfil | - | 71 m² | - |
| 77, Harlech Drive, Merthyr Tydfil | Freehold | 71 m² | £75,000 (2015) |
| 79, Harlech Drive, Merthyr Tydfil | Freehold | 68 m² | £93,000 (2018) |
| 81 Harlech Drive, Merthyr Tydfil | Freehold | 132 m² | £240,000 (2025) |
| 83 Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £98,000 (2019) |
| 83A, Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £80,500 (2009) |
| 85, Harlech Drive, Merthyr Tydfil | Freehold | 71 m² | £110,000 (2020) |
| 87 Harlech Drive, Merthyr Tydfil | Freehold | 70 m² | £153,500 (2023) |
| 87A, Harlech Drive, Merthyr Tydfil | Freehold | 71 m² | £80,000 (2016) |