| 1, Spencer Street, Cardiff | Freehold | 80 m² | £250,000 (2022) |
| 2 Spencer Street, Cathays, Cardiff, Cardiff | - | 68 m² | - |
| 3 Spencer Street, Cardiff | Freehold | 66 m² | £48,500 (1997) |
| 5 Spencer Street, Cardiff | Freehold | 65 m² | £47,000 (1996) |
| 6, Spencer Street, Cardiff | Freehold | 57 m² | £122,500 (2011) |
| 7 Spencer Street, Cardiff | Freehold | 71 m² | £200,000 (2022) |
| 8, Spencer Street, Cardiff | Freehold | 58 m² | £134,950 (2004) |
| 9, Spencer Street, Cardiff | Freehold | 71 m² | £265,000 (2023) |
| 11, Spencer Street, Cardiff | Freehold | 66 m² | £170,000 (2016) |
| 12, Spencer Street, Cardiff | Freehold | 75 m² | £156,000 (2016) |
| 13, Spencer Street, Cardiff | Freehold | 72 m² | £45,000 (1995) |
| 14, Spencer Street, Cardiff | Freehold | 86 m² | £195,000 (2020) |
| 15, Spencer Street, Cardiff | - | 65 m² | - |
| 16 Spencer Street, Cardiff | Freehold | 82 m² | £256,500 (2025) |
| 17, Spencer Street, Cardiff | Freehold | 68 m² | £154,000 (2014) |
| 19, Spencer Street, Cardiff | Freehold | 85 m² | £158,400 (2006) |
| 20 Spencer Street, Cardiff | - | 96 m² | - |
| 21 Spencer Street, Cathays, Cardiff, Cardiff | Freehold | 56 m² | £158,000 (2017) |
| 22, Spencer Street, Cardiff | Freehold | 83 m² | £175,000 (2018) |
| 23, Spencer Street, Cardiff | Freehold | 64 m² | £192,500 (2020) |
| 25 Spencer Street, Cardiff | Freehold | 73 m² | £110,000 (2012) |
| 26 Spencer Street, Cardiff | Freehold | 76 m² | £245,700 (2023) |
| 27 Spencer Street, Cardiff | Freehold | 74 m² | £256,000 (2024) |
| 28, Spencer Street, Cardiff | Freehold | 78 m² | £84,878 (2022) |
| 29 Spencer Street, Cardiff | Freehold | 77 m² | £181,000 (2018) |
| 30 Spencer Street, Cardiff | Freehold | 74 m² | £118,000 (2003) |
| 31, Spencer Street, Cardiff | Freehold | 78 m² | £149,500 (2009) |
| 33, Spencer Street, Cardiff | Freehold | 82 m² | £243,000 (2023) |
| 34 Spencer Street, Cardiff | Freehold | 86 m² | £220,000 (2021) |
| 35 Spencer Street, Cardiff | Freehold | 73 m² | £225,000 (2025) |
| 37 Spencer Street, Cardiff | Freehold | 102 m² | £187,500 (2025) |
| 38 Spencer Street, Cardiff | Freehold | 73 m² | £145,000 (2006) |
| 39 Spencer Street, Cardiff | Freehold | 79 m² | £180,000 (2023) |
| 40 Spencer Street, Cardiff | Freehold | 87 m² | £257,000 (2024) |
| 41 Spencer Street, Cardiff | - | 73 m² | - |
| 42, Spencer Street, Cardiff | Freehold | 78 m² | £225,500 (2021) |
| 43, Spencer Street, Cardiff | Freehold | 97 m² | £240,000 (2025) |
| 47 Spencer Street, Cathays, Cardiff, Cardiff | Freehold | 68 m² | £220,000 (2021) |
| 49, Spencer Street, Cardiff | Freehold | 87 m² | £150,000 (2014) |
| 51 Spencer Street, Cardiff | - | 51 m² | - |