| 2, St. Mary Street, Monmouth | Freehold | 98 m² | £210,000 (2007) |
| 4 St. Mary Street, Monmouth | Freehold | 126 m² | £295,000 (2022) |
| 5 St Mary'S Street, Monmouth | - | 39 m² | - |
| 6 St. Mary Street, Monmouth | Freehold | 105 m² | £245,000 (2024) |
| 7, St. Mary Street, Monmouth | - | 60 m² | - |
| 8 St. Mary Street, Monmouth | Freehold | 61 m² | £182,500 (2022) |
| 9 St Mary'S Street, Monmouth | - | 113 m² | - |
| 11A, St. Mary Street, Monmouth | Freehold | 63 m² | £146,000 (2016) |
| 15, St. Mary Street, Monmouth | Freehold | 103 m² | £390,000 (2018) |
| 16 St. Mary Street, Monmouth | - | 87 m² | - |
| 17, St. Mary Street, Monmouth | - | 146 m² | - |
| 20 First Floor Flat, St Mary St, St Mary St, Monmouth | - | 53 m² | - |
| 20 Top Floor Flat, St Mary St, St Mary St, Monmouth | - | 53 m² | - |
| 21 St. Mary Street, Monmouth | Freehold | 208 m² | £825,000 (2022) |
| 22 St Mary'S Street, Monmouth | - | 53 m² | - |
| 25 St. Mary Street, Monmouth | - | 77 m² | - |
| 25A St. Mary Street, Monmouth | Freehold | 107 m² | £270,000 (2017) |
| 30 St. Mary Street, Monmouth | Freehold | 234 m² | £719,200 (2021) |
| Bay Tree House, Angel Court, St. Mary'S Street, Monmouth | - | 126 m² | - |
| Drew Lacey Financial, 28 St. Mary Street, Monmouth | - | 259 m² | - |
| Flat 1, 11, St. Mary Street, Monmouth | - | 59 m² | - |
| Flat 1, 19 St. Mary Street, Monmouth | - | 75 m² | - |
| Flat 1, 20, St. Mary Street, Monmouth | - | 53 m² | - |
| Flat 1, 21, St. Mary Street, Monmouth | Freehold | 37 m² | £225,000 (2019) |
| Flat 2, 11, St. Mary Street, Monmouth | - | 53 m² | - |
| Flat 2, 19 St. Mary Street, Monmouth | - | 40 m² | - |
| Flat 2, 20, St. Mary Street, Monmouth | - | 53 m² | - |
| Flat 2, 21, St. Mary Street, Monmouth | - | 78 m² | - |
| Flat 3, 19 St. Mary Street, Monmouth | - | 82 m² | - |
| Flat 3, 21, St. Mary Street, Monmouth | - | 38 m² | - |
| Flat 4, 19 St. Mary Street, Monmouth | - | 65 m² | - |
| Flat 4, 21, St. Mary Street, Monmouth | - | 41 m² | - |
| Flat, 5, St. Mary Street, Monmouth | Freehold | 31 m² | £109,999 (2014) |
| Flat, 7, St. Mary Street, Monmouth | - | 27 m² | - |
| Olive Apartment, Angel Court, St. Mary'S Street, Monmouth | Freehold | 146 m² | £394,000 (2020) |
| The Penthouse, Angel Court, St. Mary'S Street, Monmouth | Leasehold | 165 m² | £480,000 (2023) |