| 1, Viaduct Way, Welwyn Garden City | Freehold | 85 m² | £158,000 (2005) |
| 3, Viaduct Way, Welwyn Garden City | - | 86 m² | - |
| 5, Viaduct Way, Welwyn Garden City | Freehold | 95 m² | £210,000 (2013) |
| 7 Viaduct Way, Welwyn Garden City | - | 57 m² | - |
| 9, Viaduct Way, Welwyn Garden City | - | 37 m² | - |
| 11, Viaduct Way, Welwyn Garden City | - | 59 m² | - |
| 17, Viaduct Way, Welwyn Garden City | Leasehold | 58 m² | £215,000 (2016) |
| 19 Viaduct Way, Welwyn Garden City | Leasehold | 58 m² | £135,000 (2012) |
| 21 Viaduct Way, Welwyn Garden City | - | 57 m² | - |
| 23 Viaduct Way, Welwyn Garden City | Leasehold | 59 m² | £155,000 (2015) |
| 25, Viaduct Way, Welwyn Garden City | Leasehold | 58 m² | £145,000 (2013) |
| 27, Viaduct Way, Welwyn Garden City | Leasehold | 57 m² | £215,000 (2016) |
| 29, Viaduct Way, Welwyn Garden City | - | 58 m² | - |
| 31 Viaduct Way, Welwyn Garden City | Leasehold | 57 m² | £136,000 (2011) |
| 33, Viaduct Way, Welwyn Garden City | - | 60 m² | - |
| 35, Viaduct Way, Welwyn Garden City | - | 59 m² | - |
| 39 Viaduct Way, Welwyn Garden City | - | 69 m² | - |
| 41 Viaduct Way, Welwyn Garden City | Freehold | 81 m² | £160,000 (2003) |
| 43 Viaduct Way, Welwyn Garden City | - | 69 m² | - |
| 47, Viaduct Way, Welwyn Garden City | Freehold | 101 m² | £2,365 (2022) |
| 49, Viaduct Way, Welwyn Garden City | Freehold | 86 m² | £355,000 (2024) |
| 51 Viaduct Way, Welwyn Garden City | - | 69 m² | - |
| 53 Viaduct Way, Welwyn Garden City, Welwyn Garden City | Freehold | 88 m² | £346,500 (2023) |
