| LYNDE LODGE (13), BUTTERWICK WAY WELWYN HERTFORDSHIRE AL6 9GN | £300,000 2021-06-04 flatmaisonette (New) leasehold |
| 32, REYNARDS ROAD WELWYN HERTFORDSHIRE AL6 9TP | £2,250,000 2021-06-02 detached freehold |
| 56, WILGA ROAD WELWYN HERTFORDSHIRE AL6 9PS | £570,000 2021-06-01 semidetached freehold |
| 14A, HIGH STREET WELWYN HERTFORDSHIRE AL6 9EQ | £342,000 2021-06-01 flatmaisonette leasehold |
| 94, BURNHAM GREEN ROAD BURNHAM GREEN WELWYN HERTFORDSHIRE AL6 0NQ | £735,000 2021-05-28 semidetached freehold |
| 33, LOWER GREEN TEWIN WELWYN HERTFORDSHIRE AL6 0LA | £355,000 2021-05-28 terraced freehold |
| 1, THE DRIVE WELWYN HERTFORDSHIRE AL6 0TW | £747,500 2021-05-28 detached freehold |
| BRAY HOUSE, POTTERSHEATH ROAD WELWYN HERTFORDSHIRE AL6 9TA | £1,500,000 2021-05-25 detached freehold |
| 2, THE BEECHES WELWYN HERTFORDSHIRE AL6 9LE | £517,500 2021-05-25 detached freehold |
| 15, ST JOHNS CLOSE WELWYN HERTFORDSHIRE AL6 9RB | £816,000 2021-05-24 detached freehold |
| 6, OTTWAY WALK WELWYN HERTFORDSHIRE AL6 9AS | £1,100,000 2021-05-21 detached freehold |
| 28, THE AVENUE WELWYN HERTFORDSHIRE AL6 0PP | £895,000 2021-05-20 detached freehold |
| 20, GREAT NORTH ROAD WELWYN HERTFORDSHIRE AL6 0PS | £740,000 2021-05-20 semidetached freehold |
| 1, MARDLEY HEIGHTS WELWYN HERTFORDSHIRE AL6 0TX | £810,500 2021-05-17 detached freehold |
| CANONSFIELD COURT (8), CANONSFIELD ROAD WELWYN HERTFORDSHIRE AL6 0PH | £242,000 2021-05-14 flatmaisonette leasehold |
| 4, DANESBURY LANE WELWYN HERTFORDSHIRE AL6 9SG | £1,250,000 2021-05-13 detached freehold |
| 35, TURPINS RIDE WELWYN HERTFORDSHIRE AL6 0QU | £1,100,000 2021-05-12 detached freehold |
| 17A, BRIARY WOOD LANE WELWYN HERTFORDSHIRE AL6 0TE | £760,000 2021-05-07 detached freehold |
| 38, CODICOTE ROAD WELWYN HERTFORDSHIRE AL6 9NG | £1,200,000 2021-04-30 detached freehold |
| 1, ST IVES CLOSE DIGSWELL WELWYN HERTFORDSHIRE AL6 0BB | £790,000 2021-04-29 detached freehold |