| 48 High Avenue, Letchworth Garden City | - | 86 m² | - |
| 50 High Avenue, Letchworth 2 | - | 88 m² | - |
| 52, High Avenue, Letchworth Garden City | Leasehold | 82 m² | £180,000 (2012) |
| 54 High Avenue, Letchworth Garden City | Leasehold | 65 m² | £227,000 (2021) |
| 56 High Avenue, Letchworth Garden City | Leasehold | 62 m² | £117,950 (2003) |
| 58, High Avenue, Letchworth Garden City | Leasehold | 62 m² | £240,000 (2022) |
| 60, High Avenue, Letchworth Garden City | Leasehold | 63 m² | £192,500 (2016) |
| 62 High Avenue, Letchworth Garden City | Leasehold | 65 m² | £138,000 (2013) |
| 64, High Avenue, Letchworth Garden City | Leasehold | 63 m² | £111,000 (2009) |
| 66, High Avenue, Letchworth Garden City | Leasehold | 59 m² | £218,000 (2022) |
| 68 High Avenue, Letchworth Garden City | - | 57 m² | - |
| 70 High Avenue, Letchworth Garden City | Leasehold | 63 m² | £215,000 (2024) |
| 72 High Avenue, Letchworth Garden City | Leasehold | 59 m² | £183,500 (2015) |
| 74 High Avenue, Letchworth Garden City, Letchworth Garden City | Leasehold | 61 m² | £132,000 (2009) |
| 76 High Avenue, Letchworth Garden City, Letchworth Garden City | Leasehold | 62 m² | £229,000 (2021) |
| 78 High Avenue, Letchworth Garden City | Leasehold | 66 m² | £220,000 (2025) |
| 80 High Avenue, Letchworth Garden City | Leasehold | 60 m² | £263,000 (2026) |
| 82, High Avenue, Letchworth Garden City | Leasehold | 66 m² | £255,000 (2025) |
| 83 High Avenue, Letchworth Garden City | Leasehold | 91 m² | £387,000 (2023) |
| 84 High Avenue, Letchworth Garden City | Leasehold | 61 m² | £242,000 (2022) |
| 85, High Avenue, Letchworth Garden City | Freehold | 90 m² | £183,000 (2009) |
| 87 High Avenue, Letchworth 2 | - | 92 m² | - |
| 89 High Avenue, Letchworth Garden City | - | 115 m² | - |
| 91, High Avenue, Letchworth Garden City | Leasehold | 77 m² | £370,000 (2021) |
| 93 High Avenue, Letchworth Garden City | - | 62 m² | - |
| 95, High Avenue, Letchworth Garden City | Leasehold | 63 m² | £137,000 (2004) |
| 99 High Avenue, Letchworth Garden City | Leasehold | 62 m² | £145,000 (2008) |
| 101, High Avenue, Letchworth Garden City | Leasehold | 62 m² | £125,000 (2010) |
| 105, High Avenue, Letchworth Garden City | Leasehold | 63 m² | £240,000 (2022) |
| 107 High Avenue, Letchworth Garden City | Leasehold | 59 m² | £40,000 (1995) |
| 109, High Avenue, Letchworth Garden City | Leasehold | 63 m² | £230,000 (2024) |
| 111 High Avenue, Letchworth Garden City, Letchworth Garden City | Leasehold | 67 m² | £250,000 (2024) |
| 113 High Avenue, Letchworth Garden City | - | 60 m² | - |
| 115 High Avenue, Letchworth Garden City | Leasehold | 68 m² | £125,000 (2010) |