| 38A, Castle Hill Avenue, Folkestone | Leasehold | 94 m² | £292,500 (2022) |
| 42A, Castle Hill Avenue, Folkestone | Leasehold | 116 m² | £172,000 (2017) |
| Basement Flat, 34 Castle Hill Avenue, Folkestone | Leasehold | 80 m² | £109,000 (2012) |
| First Floor Flat, 46, Castle Hill Avenue, Folkestone | - | 91 m² | - |
| Flat 1, 30, Castle Hill Avenue, Folkestone | Leasehold | 92 m² | £235,000 (2020) |
| Flat 1, 34, Castle Hill Avenue, Folkestone | Freehold | 73 m² | £64,800 (2024) |
| Flat 1, 36, Castle Hill Avenue, Folkestone | Leasehold | 85 m² | £225,000 (2023) |
| Flat 1, 38 Castle Hill Avenue, Folkestone | Leasehold | 82 m² | £210,000 (2022) |
| Flat 1, 40 Castle Hill Avenue, Folkestone | Leasehold | 78 m² | £120,000 (2015) |
| Flat 1, 44, Castle Hill Avenue, Folkestone | - | 139 m² | - |
| Flat 1, 52, Castle Hill Avenue, Folkestone | - | 94 m² | - |
| Flat 1, 54 Castle Hill Avenue, Folkestone, Folkestone | Leasehold | 106 m² | £263,000 (2021) |
| Flat 1, First Floor, 44 Castle Hill Avenue, Folkestone | - | 96 m² | - |
| Flat 2, 30, Castle Hill Avenue, Folkestone | - | 81 m² | - |
| Flat 2, 34 Castle Hill Avenue, Folkestone, Folkestone | Leasehold | 74 m² | £152,500 (2021) |
| Flat 2, 36, Castle Hill Avenue, Folkestone | - | 83 m² | - |
| Flat 2, 38, Castle Hill Avenue, Folkestone | Leasehold | 81 m² | £226,000 (2023) |
| Flat 2, 40, Castle Hill Avenue, Folkestone | Leasehold | 61 m² | £110,000 (2017) |
| Flat 2, 54, Castle Hill Avenue, Folkestone | Leasehold | 84 m² | £210,000 (2019) |
| Flat 3, 30, Castle Hill Avenue, Folkestone | Leasehold | 82 m² | £127,500 (2005) |
| Flat 3, 34 Castle Hill Avenue, Folkestone | Leasehold | 71 m² | £150,000 (2020) |
| Flat 3, 36 Castle Hill Avenue, Folkestone | Leasehold | 107 m² | £150,000 (2008) |
| Flat 3, 38, Castle Hill Avenue, Folkestone | Leasehold | 76 m² | £219,000 (2021) |
| Flat 3, 40, Castle Hill Avenue, Folkestone | Leasehold | 92 m² | £168,000 (2018) |
| Flat 3, 52, Castle Hill Avenue, Folkestone | Leasehold | 89 m² | £130,000 (2004) |
| Flat 4, 30 Castle Hill Avenue, Folkestone | Leasehold | 66 m² | £225,000 (2025) |
| Flat 4, 34, Castle Hill Avenue, Folkestone | Leasehold | 73 m² | £125,000 (2007) |
| Flat 4, 36 Castle Hill Avenue, Folkestone | Leasehold | 95 m² | £180,000 (2023) |
| Flat 4, 38, Castle Hill Avenue, Folkestone | Leasehold | 93 m² | £195,000 (2021) |
| Flat 4, 40, Castle Hill Avenue, Folkestone | Leasehold | 80 m² | £127,500 (2005) |
| Flat 4, 44, Castle Hill Avenue, Folkestone | - | 100 m² | - |
| Flat 4, 54, Castle Hill Avenue, Folkestone | Leasehold | 83 m² | £170,000 (2018) |
| Flat 5, 30 Castle Hill Avenue, Folkestone | Leasehold | 57 m² | £127,000 (2025) |
| Flat 5, 40, Castle Hill Avenue, Folkestone | Leasehold | 99 m² | £160,000 (2016) |
| Flat 5, 54 Castle Hill Avenue, Folkestone | Leasehold | 52 m² | £97,000 (2015) |
| Flat 6, 40 Castle Hill Avenue, Folkestone | Leasehold | 128 m² | £241,500 (2022) |
| Flat A, 48 Castle Hill Avenue, Folkestone | Leasehold | 148 m² | £167,000 (2006) |
| Flat A, 50 Castle Hill Avenue, Folkestone | Leasehold | 134 m² | £45,000 (2002) |
| Flat B, 32, Castle Hill Avenue, Folkestone | Leasehold | 48 m² | £170,000 (2021) |
| Flat B, 42 Castle Hill Avenue, Folkestone, Folkestone | Leasehold | 79 m² | £150,000 (2007) |
| Flat B, 48 Castle Hill Avenue, Folkestone | Leasehold | 163 m² | £240,000 (2015) |
| Flat B, 50, Castle Hill Avenue, Folkestone | Leasehold | 96 m² | £222,000 (2012) |
| Flat C, 32 Castle Hill Avenue, Folkestone | - | 79 m² | - |
| Flat C, 42 Castle Hill Avenue, Folkestone | Leasehold | 83 m² | £140,000 (2015) |
| Flat C, 48, Castle Hill Avenue, Folkestone | Leasehold | 96 m² | £245,000 (2018) |
| Flat C, 50, Castle Hill Avenue, Folkestone | - | 94 m² | - |
| Flat D, 42 Castle Hill Avenue, Folkestone | Leasehold | 80 m² | £180,000 (2019) |
| Flat D, 48 Castle Hill Avenue, Folkestone | Leasehold | 74 m² | £185,000 (2018) |
| Flat D, 50 Castle Hill Avenue, Folkestone | Leasehold | 163 m² | £328,000 (2026) |
| Flat E, 42 Castle Hill Avenue, Folkestone | Leasehold | 90 m² | £133,000 (2025) |
| Flat E, 48 Castle Hill Avenue, Folkestone | Leasehold | 99 m² | £90,000 (2013) |
| Garden Flat, 36 Castle Hill Avenue, Folkestone | Leasehold | 98 m² | £45,000 (1999) |
| Garden Flat, 46 Castle Hill Avenue, Folkestone | Leasehold | 70 m² | £48,000 (2014) |
| Ground Floor Flat, 44 Castle Hill Avenue, Folkestone, Folkestone | - | 128 m² | - |
| Ground Floor Flat, 46, Castle Hill Avenue, Folkestone | Leasehold | 94 m² | £245,000 (2018) |
| Patio Flat, 46, Castle Hill Avenue, Folkestone | - | 60 m² | - |
| Second Floor Flat, 46, Castle Hill Avenue, Folkestone | Leasehold | 97 m² | £63,000 (2002) |