| 11, HASLINGDEN CLOSE HARPENDEN HERTFORDSHIRE AL5 3EW | £970,000 2024-03-25 detached freehold |
| 53, PARK AVENUE NORTH HARPENDEN HERTFORDSHIRE AL5 2EE | £3,800,000 2024-03-22 detached freehold |
| 335, LUTON ROAD HARPENDEN HERTFORDSHIRE AL5 3LW | £805,000 2024-03-20 semidetached freehold |
| THE OLD APIARY, HATCHING GREEN HARPENDEN HERTFORDSHIRE AL5 2JS | £50,000 2024-03-20 otherPropertyType freehold |
| PEMBROKE COURT (9), THOMPSONS CLOSE HARPENDEN HERTFORDSHIRE AL5 4FH | £430,000 2024-03-19 flatmaisonette leasehold |
| 2, HAMMONDS HILL HARPENDEN HERTFORDSHIRE AL5 2LU | £2,250,000 2024-03-18 detached freehold |
| 1, GRANT GARDENS HARPENDEN HERTFORDSHIRE AL5 4QD | £1,573,000 2024-03-18 detached freehold |
| HOMEDELL HOUSE (38), ROUNDWOOD LANE HARPENDEN HERTFORDSHIRE AL5 3RA | £145,000 2024-03-15 flatmaisonette leasehold |
| 40, APLINS CLOSE HARPENDEN HERTFORDSHIRE AL5 2QB | £600,500 2024-03-15 terraced freehold |
| PARK LODGE (FLAT 3), AVENUE ST NICHOLAS HARPENDEN HERTFORDSHIRE AL5 2BX | £895,000 2024-03-14 flatmaisonette leasehold |
| 26, OVERSTONE ROAD HARPENDEN HERTFORDSHIRE AL5 5PJ | £1,000,000 2024-03-14 semidetached freehold |
| 25, CRAVELLS ROAD HARPENDEN HERTFORDSHIRE AL5 1BA | £480,000 2024-03-08 terraced freehold |
| 12, GORDONS WALK HARPENDEN HERTFORDSHIRE AL5 1LQ | £600,000 2024-03-08 semidetached freehold |
| 11, GRANGE COURT ROAD HARPENDEN HERTFORDSHIRE AL5 1BY | £2,065,000 2024-03-07 detached freehold |
| 8, DOUGLAS ROAD HARPENDEN HERTFORDSHIRE AL5 2EW | £1,735,000 2024-03-07 semidetached freehold |
| 5, LANGDALE AVENUE HARPENDEN HERTFORDSHIRE AL5 5QU | £860,000 2024-03-06 semidetached freehold |
| 27, THE UPLANDS HARPENDEN HERTFORDSHIRE AL5 2PG | £3,250,000 2024-03-01 detached freehold |
| 15, HILLSIDE ROAD HARPENDEN HERTFORDSHIRE AL5 4BS | £1,050,000 2024-03-01 semidetached freehold |
| 14, HAMMONDSWICK HARPENDEN HERTFORDSHIRE AL5 2NR | £1,750,000 2024-03-01 detached freehold |
| 6, WILLOUGHBY ROAD HARPENDEN HERTFORDSHIRE AL5 4PF | £1,200,000 2024-03-01 detached freehold |