| 22, THE UPLANDS HARPENDEN HERTFORDSHIRE AL5 2PQ | £3,500,000 2024-09-10 detached freehold |
| 9B, MILTON ROAD HARPENDEN HERTFORDSHIRE AL5 5LA | £662,500 2024-09-10 flatmaisonette leasehold |
| 20A, OAKFIELD ROAD HARPENDEN HERTFORDSHIRE AL5 2NL | £2,225,000 2024-09-10 detached freehold |
| 25, CHURCHFIELD HARPENDEN HERTFORDSHIRE AL5 1LJ | £700,000 2024-09-09 semidetached freehold |
| 2, APPLEWOOD CLOSE HARPENDEN HERTFORDSHIRE AL5 3BT | £1,025,000 2024-09-06 detached freehold |
| 53, MILTON ROAD HARPENDEN HERTFORDSHIRE AL5 5LX | £2,200,000 2024-08-29 detached freehold |
| GLENEAGLE MANOR (5), TOWNSEND LANE HARPENDEN HERTFORDSHIRE AL5 2FE | £1,600,000 2024-08-29 flatmaisonette leasehold |
| KENNELS FARM HOUSE, KINSBOURNE GREEN LANE HARPENDEN HERTFORDSHIRE AL5 3PF | £1,900,000 2024-08-27 detached freehold |
| 49, AMBROSE LANE HARPENDEN HERTFORDSHIRE AL5 4BU | £1,301,000 2024-08-27 semidetached freehold |
| 26, TENNYSON ROAD HARPENDEN HERTFORDSHIRE AL5 4BB | £1,225,000 2024-08-23 semidetached freehold |
| 37, HARPENDEN RISE HARPENDEN HERTFORDSHIRE AL5 3BG | £650,000 2024-08-16 semidetached freehold |
| 6, COLESWOOD ROAD HARPENDEN HERTFORDSHIRE AL5 1EQ | £737,500 2024-08-15 detached freehold |
| AKRILL HOUSE (14), HOLLYBUSH LANE HARPENDEN HERTFORDSHIRE AL5 4BJ | £455,600 2024-08-07 flatmaisonette leasehold |
| 15, BURNSALL PLACE HARPENDEN HERTFORDSHIRE AL5 1RS | £626,600 2024-08-07 semidetached freehold |
| THE RIGG, HATCHING GREEN HARPENDEN HERTFORDSHIRE AL5 2JP | £775,000 2024-07-26 detached freehold |
| 14, TARRANT DRIVE HARPENDEN HERTFORDSHIRE AL5 1RP | £550,000 2024-07-24 detached freehold |
| 16, CARISBROOKE ROAD HARPENDEN HERTFORDSHIRE AL5 5QT | £1,180,000 2024-06-14 semidetached freehold |
| HADDON COURT (28), MILTON ROAD HARPENDEN HERTFORDSHIRE AL5 5NA | £615,000 2024-06-05 terraced freehold |
| THE OLD APIARY, HATCHING GREEN HARPENDEN HERTFORDSHIRE AL5 2JS | £500,000 2024-11-21 otherPropertyType freehold |
| 14, FINLEY ROAD HARPENDEN HERTFORDSHIRE AL5 5BW | £310,000 2024-11-15 flatmaisonette leasehold |