| 1 King Street, Barnard Castle | Freehold | 48 m² | £36,000 (2002) |
| 2, King Street, Barnard Castle | Leasehold | 81 m² | £190,000 (2025) |
| 2A, King Street, Barnard Castle | Freehold | 134 m² | £310,000 (2019) |
| 3 King Street, Barnard Castle | - | 62 m² | - |
| 4, King Street, Barnard Castle | Freehold | 145 m² | £237,500 (2016) |
| 5, King Street, Barnard Castle | - | 70 m² | - |
| 7 King Street, Barnard Castle | Freehold | 109 m² | £34,600 (1998) |
| 8 King Street, Barnard Castle | Freehold | 129 m² | £250,000 (2024) |
| 9, King Street, Barnard Castle | Freehold | 118 m² | £225,000 (2024) |
| 10 King Street, Barnard Castle | Freehold | 157 m² | £195,000 (2025) |
| 11 King Street, Barnard Castle, Barnard Castle | Freehold | 112 m² | £26,000 (1995) |
| 12, King Street, Barnard Castle | Freehold | 85 m² | £152,000 (2017) |
| 14, King Street, Barnard Castle | Freehold | 133 m² | £130,000 (2014) |
| 15 King Street, Barnard Castle | Freehold | 126 m² | £130,000 (2008) |
| 16, King Street, Barnard Castle | Freehold | 93 m² | £137,000 (2018) |
| 17 King Street, Barnard Castle | Freehold | 102 m² | £205,000 (2021) |
| 17B, King Street, Barnard Castle | - | 79 m² | - |
| 17C, King Street, Barnard Castle | Freehold | 125 m² | £339,500 (2025) |
| 18, King Street, Barnard Castle | - | 52 m² | - |
| 18A, King Street, Barnard Castle | - | 64 m² | - |
| 19 King Street, Barnard Castle | Freehold | 95 m² | £172,500 (2022) |
| 20, King Street, Barnard Castle | Freehold | 104 m² | £230,000 (2026) |
| 22, King Street, Barnard Castle | Freehold | 141 m² | £175,000 (2011) |
| 23 King Street, Barnard Castle | Freehold | 41 m² | £85,000 (2025) |
| 26 King Street, Barnard Castle | - | 64 m² | - |
| 28 King Street, Barnard Castle | - | 56 m² | - |
| The Mews, 2B King Street, Barnard Castle | - | 122 m² | - |