| 1, William Avenue, Folkestone | Freehold | 99 m² | £395,000 (2020) |
| 4, William Avenue, Folkestone | Freehold | 111 m² | £200,000 (2013) |
| 5, William Avenue, Folkestone | Freehold | 105 m² | £300,000 (2019) |
| 7, William Avenue, Folkestone | - | 124 m² | - |
| 8, William Avenue, Folkestone | Freehold | 117 m² | £436,000 (2022) |
| 11 William Avenue, Folkestone | Freehold | 109 m² | £450,000 (2024) |
| 15, William Avenue, Folkestone | - | 115 m² | - |
| 17, William Avenue, Folkestone | Freehold | 100 m² | £362,500 (2019) |
| 18, William Avenue, Folkestone | Freehold | 120 m² | £310,000 (2016) |
| 20, William Avenue, Folkestone | Freehold | 116 m² | £400,000 (2021) |
| 21, William Avenue, Folkestone | Freehold | 123 m² | £260,000 (2011) |
| 22, William Avenue, Folkestone | Freehold | 117 m² | £205,000 (2006) |
| 23, William Avenue, Folkestone | Freehold | 107 m² | £347,000 (2020) |
| 24, William Avenue, Folkestone | Freehold | 101 m² | £220,000 (2015) |
| 25, William Avenue, Folkestone | - | 110 m² | - |
| 27, William Avenue, Folkestone | Freehold | 124 m² | £405,000 (2021) |
| 31, William Avenue, Folkestone | Freehold | 124 m² | £270,000 (2015) |
| 33, William Avenue, Folkestone | - | 128 m² | - |
| 35, William Avenue, Folkestone | Freehold | 123 m² | £377,000 (2017) |
| 39, William Avenue, Folkestone | Freehold | 121 m² | £250,000 (2013) |
| 43, William Avenue, Folkestone | Freehold | 116 m² | £250,000 (2014) |
