| 59, Sibley Avenue, Harpenden AL5 1HF | Detached | 4 | £1,100,000 | 2025-12-04 |
| 9, 101 Walkers Court, Southdown Road, Harpenden AL5 1QL | Flat | 1 | £213,000 | 2025-12-04 |
| 31, 101 Walkers Court, Southdown Road, Harpenden AL5 1QL | Flat | 2 | £265,000 | 2025-12-04 |
| 6, Bewdley Close, Harpenden AL5 1QX | Detached | 3 | £665,000 | 2025-12-04 |
| 35, Long Buftlers, Harpenden AL5 1JF | Detached | 4 | £1,265,000 | 2025-11-28 |
| 51, Cranbourne Drive, Harpenden AL5 1RJ | Detached | 4 | £760,000 | 2025-11-26 |
| 4, Acacia Walk, Harpenden AL5 1SH | Detached | - | £800,000 | 2025-11-21 |
| 35a, Piggottshill Lane, Harpenden AL5 1LR | Semi_Detached | - | £770,000 | 2025-09-19 |
| Flat 3, 1 Welcombe House, Gibbs Close, Harpenden AL5 1FA | Semi_Detached | - | £950,000 | 2025-09-18 |
| 14, Gordons Walk, Harpenden AL5 1LQ | Semi_Detached | 3 | £652,500 | 2025-09-17 |
| 28, Sibley Avenue, Harpenden AL5 1HF | Semi_Detached | - | £793,650 | 2025-09-05 |
| 39, Cravells Road, Harpenden AL5 1BA | Terracedd | 3 | £655,000 | 2025-09-04 |
| 15, Ravenscroft, Harpenden AL5 1ST | Terracedd | 3 | £565,000 | 2025-09-02 |
| 37, Welbeck Rise, Harpenden AL5 1RT | Detached | 3 | £662,000 | 2025-08-22 |
| 144, Cravells Road, Harpenden AL5 1BQ | Terracedd | 4 | £955,000 | 2025-08-20 |