| 7, Tylers, Harpenden AL5 5RT | Terracedd | 3 | £572,500 | 2025-10-23 |
| 40, Marquis Lane, Harpenden AL5 5AE | Semi_Detached | 2 | £565,000 | 2025-10-03 |
| 44, Lower Luton Road, Harpenden AL5 5AH | Terracedd | 2 | £540,000 | 2025-10-02 |
| 5, Lower Luton Road, Harpenden AL5 5AF | Terracedd | 2 | £400,000 | 2025-09-30 |
| 26, Salisbury Road, Harpenden AL5 5AY | Semi_Detached | 2 | £424,000 | 2025-09-26 |
| 32, Salisbury Road, Harpenden AL5 5AY | Semi_Detached | 4 | £668,000 | 2025-09-25 |
| 9, Poets Court, Milton Road, Harpenden AL5 5EW | Flat | - | £219,000 | 2025-09-19 |
| 30, Crabtree Lane, Harpenden AL5 5NS | Detached | - | £1,395,000 | 2025-09-17 |
| 30a, Lower Luton Road, Harpenden AL5 5AQ | Semi_Detached | 4 | £865,000 | 2025-09-12 |
| 65, Chesterton Avenue, Harpenden AL5 5SU | Semi_Detached | 3 | £765,500 | 2025-09-05 |
| 38, Millstone Way, Harpenden AL5 5FE | Flat | 2 | £320,000 | 2025-09-04 |
| 4, Barley Rise, Northfield Road, Harpenden AL5 5JJ | Terracedd | - | £372,500 | 2025-08-20 |
| 8, Shelley Court, Milton Road, Harpenden AL5 5LL | Flat | 2 | £400,000 | 2025-08-19 |
| 1b, Crabtree Lane, Harpenden AL5 5TA | Detached | 4 | £1,530,565 | 2025-08-18 |
| 30, Lower Luton Road, Harpenden AL5 5AQ | Semi_Detached | 4 | £850,000 | 2025-07-31 |