| 1 William Street, Sittingbourne | Freehold | 74 m² | £130,500 (2007) |
| 1A William Street, Sittingbourne, Sittingbourne | - | 38 m² | - |
| 1B William Street, Sittingbourne, Sittingbourne | - | 38 m² | - |
| 1C William Street, Sittingbourne, Sittingbourne | - | 45 m² | - |
| 1D William Street, Sittingbourne, Sittingbourne | - | 38 m² | - |
| 1E William Street, Sittingbourne, Sittingbourne | - | 28 m² | - |
| 2B, William Street, Sittingbourne | Leasehold | 65 m² | £137,500 (2017) |
| 5, William Street, Sittingbourne | Freehold | 65 m² | £190,000 (2021) |
| 6, William Street, Sittingbourne | Freehold | 81 m² | £63,000 (2001) |
| 7 William Street, Sittingbourne, Sittingbourne | Freehold | 83 m² | £85,000 (2002) |
| 8, William Street, Sittingbourne | Freehold | 96 m² | £168,000 (2019) |
| 9 William Street, Sittingbourne, Sittingbourne | Freehold | 79 m² | £140,000 (2025) |
| 10 William Street, Sittingbourne | Freehold | 75 m² | £150,000 (2016) |
| 14, William Street, Sittingbourne | Freehold | 77 m² | £122,500 (2013) |
| 16 William Street, Sittingbourne | Freehold | 87 m² | £44,950 (1996) |
| 23, William Street, Sittingbourne | Freehold | 77 m² | £148,000 (2015) |
| 24, William Street, Sittingbourne | Freehold | 77 m² | £200,000 (2022) |
| 25, William Street, Sittingbourne | Freehold | 74 m² | £125,000 (2014) |
| 28 William Street, Sittingbourne | - | 68 m² | - |
| 30, William Street, Sittingbourne | Freehold | 66 m² | £101,500 (2011) |
| 31 William Street, Sittingbourne | Freehold | 75 m² | £116,000 (2014) |
| 33 William Street, Sittingbourne, Sittingbourne | Freehold | 87 m² | £240,000 (2022) |
| 34 William Street, Sittingbourne | Freehold | 70 m² | £225,000 (2025) |
| 35, William Street, Sittingbourne | Freehold | 75 m² | £185,000 (2025) |
| 36, William Street, Sittingbourne | Freehold | 77 m² | £193,000 (2018) |
| 37, William Street, Sittingbourne | Freehold | 71 m² | £35,250 (1996) |
| 38 William Street, Sittingbourne | Freehold | 82 m² | £100,000 (2009) |
| 40, William Street, Sittingbourne | Freehold | 71 m² | £160,000 (2021) |
| 41 William Street, Sittingbourne | Freehold | 81 m² | £260,000 (2025) |
| 42 William Street, Sittingbourne | - | 72 m² | - |
| 44 William Street, Sittingbourne | - | 72 m² | - |
| 46 William Street, Sittingbourne | - | 72 m² | - |
| 47, William Street, Sittingbourne | Freehold | 92 m² | £245,000 (2026) |
| 48, William Street, Sittingbourne | Freehold | 72 m² | £125,000 (2007) |
| 49, William Street, Sittingbourne | Freehold | 108 m² | £159,000 (2008) |
| 50, William Street, Sittingbourne | - | 67 m² | - |
| 52, William Street, Sittingbourne | Freehold | 73 m² | £112,000 (2010) |
| 54 William Street, Sittingbourne | Freehold | 74 m² | £230,000 (2025) |
| 55, William Street, Sittingbourne | Freehold | 74 m² | £250,000 (2023) |
| 56 William Street, Sittingbourne | Freehold | 65 m² | £32,250 (1998) |
| 58, William Street, Sittingbourne | Freehold | 63 m² | £180,000 (2016) |
| 60, William Street, Sittingbourne | Freehold | 64 m² | £178,000 (2019) |
| 62, William Street, Sittingbourne | Freehold | 79 m² | £201,500 (2019) |
| 64 William Street, Sittingbourne | - | 75 m² | - |
| 65, William Street, Sittingbourne | Freehold | 70 m² | £198,000 (2021) |
| 66 William Street, Sittingbourne | Freehold | 73 m² | £146,000 (2015) |
| Ground Floor Flat, 13 William Street, Sittingbourne | - | 29 m² | - |
| Top Flat, 13 William Street, Sittingbourne | - | 36 m² | - |