| 24, Welwyn Hall Gardens, Welwyn AL6 9LF | Terracedd | 3 | £602,000 | 2025-10-09 |
| 19, Norman Road, Welwyn AL6 9JW | Terracedd | 2 | £680,000 | 2025-10-01 |
| 48, Broomfield Road, Welwyn AL6 9DW | Semi_Detached | - | £410,409 | 2025-09-05 |
| 8, Beecholme, Codicote Road, Welwyn AL6 9UJ | Flat | 2 | £370,000 | 2025-08-08 |
| 13, Butterwick Way, Welwyn AL6 9GH | Semi_Detached | - | £875,000 | 2025-08-05 |
| 26, Wilga Road, Welwyn AL6 9PS | Semi_Detached | 3 | £500,000 | 2025-07-28 |
| 54b, London Road, Welwyn AL6 9HX | Terracedd | 3 | £468,000 | 2025-07-11 |
| 65, London Road, Welwyn AL6 9HU | Semi_Detached | 3 | £462,500 | 2025-05-23 |
| 3, The Crescent, Welwyn AL6 9JG | Semi_Detached | 4 | £485,000 | 2025-05-23 |
| 25, School Lane, Welwyn AL6 9PQ | Semi_Detached | 3 | £550,000 | 2025-03-31 |
| 4, Quartz Court, Clock House Gardens, Welwyn AL6 9FP | Flat | 1 | £195,000 | 2025-03-31 |
| Millford Lodge, Fulling Mill Lane, Welwyn, Hertfordshire AL6 9NP | Detached | 3 | £800,000 | 2025-03-28 |
| Millford Lodge, Fulling Mill Lane, Welwyn AL6 9NP | Detached | 3 | £800,000 | 2025-03-28 |
| 17, Wendover Drive, Welwyn AL6 9LT | Semi_Detached | 3 | £775,000 | 2025-03-21 |
| 9, Reeves Court, Welwyn AL6 9FU | Detached | 5 | £1,150,000 | 2025-03-20 |