| 4, Mill Common, Undy, Caldicot | - | 108 m² | - |
| 5 Mill Common, Undy, Caldicot | Leasehold | 110 m² | £189,950 (2005) |
| 6, Mill Common, Undy, Caldicot | Freehold | 104 m² | £430,000 (2022) |
| 7, Mill Common, Undy, Caldicot | Freehold | 103 m² | £230,000 (2016) |
| 9 Mill Common, Undy, Caldicot | Freehold | 90 m² | £420,000 (2023) |
| 11, Mill Common, Undy, Caldicot | Leasehold | 108 m² | £358,000 (2023) |
| 12 Mill Common, Undy, Caldicot | Freehold | 139 m² | £309,000 (2018) |
| 18, Mill Common, Undy, Caldicot | Leasehold | 112 m² | £255,000 (2017) |
| 22, Mill Common, Undy, Caldicot | Leasehold | 161 m² | £432,000 (2021) |
| 23, Mill Common, Undy, Caldicot | Leasehold | 97 m² | £249,950 (2016) |
| 24, Mill Common, Undy, Caldicot | Freehold | 107 m² | £285,000 (2021) |
| 30, Mill Common, Undy, Caldicot | Leasehold | 102 m² | £237,000 (2016) |
| 36 Mill Common, Undy, Caldicot | - | 99 m² | - |
| 37, Mill Common, Undy, Caldicot | Leasehold | 107 m² | £229,950 (2014) |
| 38, Mill Common, Undy, Caldicot | Freehold | 112 m² | £320,000 (2019) |
| 40, Mill Common, Undy, Caldicot | Leasehold | 126 m² | £232,500 (2016) |
| 41, Mill Common, Undy, Caldicot | Leasehold | 101 m² | £279,950 (2018) |
| 45 Mill Common, Undy, Caldicot | Leasehold | 133 m² | £229,500 (2010) |
| 46, Mill Common, Undy, Caldicot | Leasehold | 92 m² | £326,000 (2022) |