| Address | Date | Type | Price |
|---|---|---|---|
| 16, MARDLEY AVENUE | 31-08-2018 | Detached | £690,000 |
| 18, MARDLEY AVENUE | 08-08-2017 | Semi-Detached | £665,000 |
| 4, MARDLEY AVENUE | 16-06-2016 | Detached | £475,000 |
| 6, MARDLEY AVENUE | 13-10-2014 | Detached | £625,000 |
| 6, MARDLEY AVENUE | 16-06-2009 | Detached | £289,950 |
| 16, MARDLEY AVENUE | 26-05-2009 | Detached | £377,000 |
| 2, MARDLEY AVENUE | 21-04-2009 | Detached | £275,000 |
| 20, MARDLEY AVENUE, WELWYN | 20-01-2006 | Terraced | £332,500 |
| 18, MARDLEY AVENUE, WELWYN | 05-12-2005 | Semi-Detached | £355,000 |
| 2B, MARDLEY AVENUE, WELWYN | 13-03-2002 | Detached | £220,000 |