| 5A, Castletown, Portland | - | 37 m² | - |
| 6, Castletown, Portland | Freehold | 97 m² | £192,500 (2005) |
| 7A Castletown, Portland | Leasehold | 133 m² | £247,500 (2007) |
| 9A Castletown, Portland, Portland | Leasehold | 40 m² | £80,000 (2022) |
| 9B Castletown, Portland, Portland | Leasehold | 42 m² | £23,750 (2000) |
| 14, Castletown, Portland | Freehold | 116 m² | £165,000 (2013) |
| 15A Castletown, Portland | - | 41 m² | - |
| 15B Castletown, Portland | Freehold | 45 m² | £115,000 (2014) |
| 22, Castletown, Portland | Freehold | 103 m² | £242,910 (2025) |
| 23, Castletown, Portland | Freehold | 88 m² | £65,500 (2001) |
| 25, Castletown, Portland | - | 126 m² | - |
| Barbary House, Castletown, Portland | Freehold | 153 m² | £315,000 (2018) |
| Chandlers Nook, 7 Castletown, Portland | - | 43 m² | - |
| Flat 1, 8 Castletown, Portland, Portland | - | 113 m² | - |
| Flat 1, 9 Castletown, Portland | - | 77 m² | - |
| Flat 2, 8 Castletown, Portland, Portland | - | 110 m² | - |
| Flat 2, 9 Castletown, Portland, Portland | Leasehold | 78 m² | £31,500 (1999) |
| Flat 2, 10, Castletown, Portland | - | 110 m² | - |
| Flat 3, 9, Castletown, Portland | Leasehold | 76 m² | £165,000 (2026) |
| Flat 3, 10, Castletown, Portland | - | 53 m² | - |
| Flat 4, 9 Castletown, Portland, Portland | Freehold | 76 m² | £39,000 (2002) |
| Flat 4, 10, Castletown, Portland | - | 53 m² | - |
| Flat 5, 10, Castletown, Portland | - | 52 m² | - |
| Flat 6, 10, Castletown, Portland | - | 53 m² | - |
| Riggers Retreat, 7 Castletown, Portland | - | 40 m² | - |
| The Coach House, Castletown, Portland | Freehold | 175 m² | £95,000 (2012) |
| The Customs House, Castletown, Portland | Freehold | 175 m² | £495,000 (2021) |
