| 1 Cromwell Road, Letchworth Garden City | - | 97 m² | - |
| 2 Cromwell Road, Letchworth Garden City | Freehold | 92 m² | £340,000 (2025) |
| 3 Cromwell Road, Letchworth Garden City | - | 95 m² | - |
| 4, Cromwell Road, Letchworth Garden City | Freehold | 92 m² | £273,000 (2016) |
| 5 Cromwell Road, Letchworth Garden City | - | 108 m² | - |
| 6, Cromwell Road, Letchworth Garden City | - | 95 m² | - |
| 7 Cromwell Road, Letchworth Garden City | - | 70 m² | - |
| 8 Cromwell Road, Letchworth Garden City | - | 124 m² | - |
| 10, Cromwell Road, Letchworth Garden City | Leasehold | 47 m² | £98,000 (2003) |
| 12, Cromwell Road, Letchworth Garden City | Leasehold | 32 m² | £16,500 (1996) |
| 14, Cromwell Road, Letchworth Garden City | - | 63 m² | - |
| 18, Cromwell Road, Letchworth Garden City | Leasehold | 32 m² | £56,000 (2002) |
| 22 Cromwell Road, Letchworth Garden City | Leasehold | 48 m² | £180,000 (2017) |
| 24, Cromwell Road, Letchworth Garden City | Leasehold | 31 m² | £125,000 (2017) |
| 26, Cromwell Road, Letchworth Garden City | Leasehold | 60 m² | £140,000 (2010) |
| 28 Cromwell Road, Letchworth Garden City | Leasehold | 60 m² | £212,000 (2024) |
| 30 Cromwell Road, Letchworth Garden City | Leasehold | 32 m² | £130,000 (2018) |
| 32, Cromwell Road, Letchworth Garden City | Leasehold | 47 m² | £175,000 (2020) |
| 34, Cromwell Road, Letchworth Garden City | Leasehold | 60 m² | £225,000 (2018) |
| 36, Cromwell Road, Letchworth Garden City | - | 32 m² | - |
| 38, Cromwell Road, Letchworth Garden City | Leasehold | 48 m² | £120,000 (2007) |
| 40 Cromwell Road, Letchworth Garden City | Leasehold | 61 m² | £47,000 (1998) |
| 42, Cromwell Road, Letchworth Garden City | Leasehold | 32 m² | £121,000 (2017) |
| 44 Cromwell Road, Letchworth Garden City | Leasehold | 48 m² | £124,000 (2008) |
| 46 Cromwell Road, Letchworth Garden City | Leasehold | 47 m² | £36,000 (1995) |
| 48, Cromwell Road, Letchworth Garden City | Leasehold | 34 m² | £18,250 (1996) |
| 50, Cromwell Road, Letchworth Garden City | Leasehold | 70 m² | £76,055 (2001) |
| 52, Cromwell Road, Letchworth Garden City | Leasehold | 49 m² | £160,000 (2025) |
| 56, Cromwell Road, Letchworth Garden City | Leasehold | 66 m² | £128,500 (2012) |
| 58, Cromwell Road, Letchworth Garden City | Leasehold | 48 m² | £166,500 (2017) |
| 64, Cromwell Road, Letchworth Garden City | Leasehold | 66 m² | £200,000 (2021) |
| 66 Cromwell Road, Letchworth Garden City | Leasehold | 38 m² | £128,000 (2022) |
| 68, Cromwell Road, Letchworth Garden City | Leasehold | 63 m² | £174,995 (2016) |
| 70, Cromwell Road, Letchworth Garden City | Leasehold | 64 m² | £195,000 (2019) |
| 72 Cromwell Road, Letchworth Garden City, Letchworth Garden City | Leasehold | 32 m² | £80,000 (2006) |
| 74 Cromwell Road, Letchworth Garden City | Leasehold | 65 m² | £130,000 (2012) |
| 76 Cromwell Road, Letchworth Garden City | Leasehold | 65 m² | £123,800 (2003) |
| 78 Cromwell Road, Letchworth Garden City | Leasehold | 39 m² | £125,000 (2022) |
| 80, Cromwell Road, Letchworth Garden City | - | 102 m² | - |
