| 2, Castle Avenue, Penarth | Freehold | 139 m² | £365,000 (2013) |
| 2A Castle Avenue, Penarth | - | 98 m² | - |
| 4A Castle Avenue, Penarth | Freehold | 141 m² | £325,000 (2005) |
| 6-8, Castle Avenue, Penarth | - | 165 m² | - |
| 12, Castle Avenue, Penarth | Freehold | 77 m² | £267,500 (2018) |
| 14 Castle Avenue, Penarth | - | 79 m² | - |
| 16 Castle Avenue, Penarth | Freehold | 91 m² | £185,000 (2007) |
| 18 Castle Avenue, Penarth | - | 79 m² | - |
| 22 Castle Avenue, Penarth | Freehold | 91 m² | £387,000 (2025) |
| 24 Castle Avenue, Penarth | - | 100 m² | - |
| 26, Castle Avenue, Penarth | Freehold | 116 m² | £270,000 (2015) |
| 28, Castle Avenue, Penarth | Freehold | 130 m² | £370,000 (2024) |
| 30 Castle Avenue, Penarth | - | 124 m² | - |
| 34 Castle Avenue, Penarth | Freehold | 82 m² | £273,000 (2025) |
| 36, Castle Avenue, Penarth | - | 80 m² | - |
| 38 Castle Avenue, Penarth | Freehold | 77 m² | £297,000 (2021) |
| 40, Castle Avenue, Penarth | - | 78 m² | - |
| 42, Castle Avenue, Penarth | Freehold | 82 m² | £257,500 (2019) |
| 44 Castle Avenue, Penarth | Freehold | 80 m² | £153,000 (2004) |
| 46, Castle Avenue, Penarth | - | 120 m² | - |
| 52 Castle Avenue, Penarth | Freehold | 123 m² | £516,000 (2026) |
| 54, Castle Avenue, Penarth | Freehold | 82 m² | £199,995 (2014) |
| 56 Castle Avenue, Penarth | Freehold | 80 m² | £360,000 (2023) |
| 60, Castle Avenue, Penarth | - | 80 m² | - |
| 64 Castle Avenue, Penarth | Freehold | 82 m² | £320,000 (2025) |
| 66 Castle Avenue, Penarth | Freehold | 80 m² | £325,000 (2025) |
| 68, Castle Avenue, Penarth | - | 80 m² | - |
| 70 Castle Avenue, Penarth | Freehold | 84 m² | £336,200 (2022) |
| 72, Castle Avenue, Penarth | Freehold | 81 m² | £211,000 (2016) |