| 1 Gladstone Street, Mountain Ash | Leasehold | 145 m² | £22,525 (2002) |
| 1A Gladstone Street, Mountain Ash | Leasehold | 67 m² | £39,999 (2020) |
| 2 Gladstone Street, Mountain Ash, Mountain Ash | Freehold | 115 m² | £70,000 (2020) |
| 4, Gladstone Street, Mountain Ash | Freehold | 74 m² | £39,900 (2019) |
| 5, Gladstone Street, Mountain Ash | - | 62 m² | - |
| 7, Gladstone Street, Mountain Ash | Freehold | 64 m² | £64,995 (2021) |
| 8 Gladstone Street, Mountain Ash | - | 74 m² | - |
| 9 Gladstone Street, Miskin, Mid Glamorgan | - | 71 m² | - |
| 10 Gladstone Street, Mountain Ash | - | 80 m² | - |
| 11 Gladstone Street, Mountain Ash, Mountain Ash | - | 75 m² | - |
| 12, Gladstone Street, Mountain Ash | Freehold | 67 m² | £38,000 (2004) |
| 13 Gladstone Street, Mountain Ash | - | 73 m² | - |
| 14, Gladstone Street, Mountain Ash | - | 80 m² | - |
| 15, Gladstone Street, Mountain Ash | - | 59 m² | - |
| 16, Gladstone Street, Mountain Ash | - | 62 m² | - |
| 17 Gladstone Street, Mountain Ash | Leasehold | 77 m² | £63,000 (2024) |
| 18 Gladstone Street, Mountain Ash | - | 54 m² | - |
| 19 Gladstone Street, Mountain Ash | - | 60 m² | - |
| 20, Gladstone Street, Mountain Ash | - | 58 m² | - |
| 21 Gladstone Street, Mountain Ash, Mountain Ash | - | 62 m² | - |
| 22 Gladstone Street, Mountain Ash | - | 56 m² | - |
| 24, Gladstone Street, Mountain Ash | Freehold | 88 m² | £60,000 (2013) |
| 26 Gladstone Street, Mountain Ash | Leasehold | 69 m² | £34,500 (2003) |
| 27 Gladstone Street, Mountain Ash | Leasehold | 85 m² | £75,000 (2017) |
| 28, Gladstone Street, Mountain Ash | Freehold | 73 m² | £74,500 (2026) |
| 30, Gladstone Street, Mountain Ash | Leasehold | 78 m² | £6,800 (1996) |
| 31 Gladstone Street, Mountain Ash, Mountain Ash | - | 82 m² | - |