| 531, Howlands, Welwyn Garden City | Freehold | 82 m² | £330,000 (2019) |
| 533 Howlands, Welwyn Garden City | - | 81 m² | - |
| 535, Howlands, Welwyn Garden City | - | 82 m² | - |
| 543 Howlands, Welwyn Garden City | - | 81 m² | - |
| 545, Howlands, Welwyn Garden City | Freehold | 80 m² | £250,000 (2014) |
| 547 Howlands, Welwyn Garden City | Freehold | 82 m² | £350,000 (2021) |
| 555 Howlands, Welwyn Garden City | - | 93 m² | - |
| 557 Howlands, Welwyn Garden City | - | 82 m² | - |
| 559, Howlands, Welwyn Garden City | Freehold | 90 m² | £268,000 (2015) |
| 563, Howlands, Welwyn Garden City | Freehold | 83 m² | £198,995 (2009) |
| 567 Howlands, Welwyn Garden City | - | 73 m² | - |
| 569 Howlands, Welwyn Garden City | - | 73 m² | - |
| 571 Howlands, Welwyn Garden City | - | 73 m² | - |
| 573 Howlands, Welwyn Garden City | Freehold | 64 m² | £220,000 (2011) |
| 575 Howlands, Welwyn Garden City | - | 73 m² | - |
| 577, Howlands, Welwyn Garden City | Freehold | 72 m² | £240,000 (2013) |
| 579 Howlands, Welwyn Garden City | - | 70 m² | - |
| 581, Howlands, Welwyn Garden City | Freehold | 71 m² | £395,000 (2016) |
| 583 Howlands, Welwyn Garden City | Freehold | 124 m² | £585,000 (2023) |
| 585, Howlands, Welwyn Garden City | Freehold | 78 m² | £222,500 (2011) |
| 595 Howlands, Welwyn Garden City, Welwyn Garden City | Freehold | 92 m² | £385,500 (2021) |
| 597 Howlands, Welwyn Garden City | - | 79 m² | - |
| 601 Howlands, Welwyn Garden City | - | 73 m² | - |
| 603 Howlands, Welwyn Garden City | - | 73 m² | - |
