| 52, Alzey Gardens, Harpenden AL5 5SY | Detached | - | £910,000 | 2026-02-24 |
| 23, Poets Court, Milton Road, Harpenden AL5 5EW | Flat | 1 | £269,000 | 2026-02-13 |
| 15, Whitings Close, Harpenden AL5 5HH | Terracedd | 3 | £455,000 | 2026-02-04 |
| 25, Carisbrooke Road, Harpenden AL5 5QS | Semi_Detached | 4 | £999,000 | 2026-01-15 |
| 20, Millstone Way, Harpenden AL5 5FE | Flat | - | £328,000 | 2026-01-12 |
| 10, Saxon Close, Harpenden AL5 5HT | Terracedd | 3 | £625,000 | 2026-01-09 |
| 19, Coleridge Court, Milton Road, Harpenden AL5 5LD | Flat | 3 | £500,000 | 2026-01-09 |
| 9, Common Lane, Batford, Harpenden AL5 5BU | Semi_Detached | 3 | £700,000 | 2025-12-10 |
| 16, Shelley Court, Milton Road, Harpenden AL5 5LL | Terracedd | 3 | £555,000 | 2025-12-10 |
| 40, Granby Avenue, Harpenden AL5 5QR | Detached | 3 | £1,875,000 | 2025-12-05 |
| 5, Englehurst, Harpenden AL5 5SQ | Terracedd | 3 | £635,000 | 2025-11-25 |
| 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 |