10, Knowle Drive, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Mar 2018.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 10, Knowle Drive, Harpenden was last sold on 17th June 2019 for £622,500 and was recorded as a freehold house.

The property has had 5 sales since 1995.

Since June 2019, the market for similar properties has risen by 50.9%.

• Sold Jun 2019£622,500
• Sold Sep 2016£450,000
• Sold Oct 2005£255,000

According to the Land Registry and our network of Estate Agents, there have been 102 sales of properties similar to 10, Knowle Drive, Harpenden within a radius of 600 metres since 2018.

The most recent example is 7, Cranbourne Drive, Harpenden, AL5 1RJ, a freehold house which sold for £790,000 on the 17th February 2026.

Read more about house prices in AL5.

• Sold Feb 2026£790,000 | 4 Bed House7, Cranbourne Drive, Harpenden, AL5 1RJ7, Cranbourne Drive, Harpenden, AL5 1RJ
• Sold Nov 2025£760,000 | 4 Bed House51, Cranbourne Drive, Harpenden, AL5 1RJ51, Cranbourne Drive, Harpenden, AL5 1RJ
• Sold Nov 2025£850,000 | 4 Bed House2, Wensley Close, Harpenden, AL5 1RZ2, Wensley Close, Harpenden, AL5 1RZ
• Sold Sep 2025£770,000 | 4 Bed House35, Piggottshill Lane, Harpenden, AL5 1LR35, Piggottshill Lane, Harpenden, AL5 1LR
• Sold Mar 2025£675,000 | 4 Bed House14, St. Michaels Close, Harpenden, AL5 1EW14, St. Michaels Close, Harpenden, AL5 1EW
• Sold Mar 2025£835,000 | 4 Bed House9, Newton Close, Harpenden, AL5 1SP9, Newton Close, Harpenden, AL5 1SP
• Sold Nov 2024£650,000 | 4 Bed House17D, Grove Avenue, Harpenden, AL5 1EU17D, Grove Avenue, Harpenden, AL5 1EU
• Sold Aug 2024£825,000 | 4 Bed House16, Pipers Avenue, Harpenden, AL5 1HB16, Pipers Avenue, Harpenden, AL5 1HB
• Sold Jul 2024£815,000 | 4 Bed House39, Broadstone Road, Harpenden, AL5 1RD39, Broadstone Road, Harpenden, AL5 1RD
• Sold Jul 2024£925,000 | 4 Bed House54, Broadstone Road, Harpenden, AL5 1RF54, Broadstone Road, Harpenden, AL5 1RF
• Sold Feb 2024£670,000 | 4 Bed House16, Burnsall Place, Harpenden, AL5 1RS16, Burnsall Place, Harpenden, AL5 1RS
• Sold Aug 2023£765,000 | 4 Bed House16, Hawthorn Close, Harpenden, AL5 1HN16, Hawthorn Close, Harpenden, AL5 1HN
• Sold Jan 2023£841,000 | 4 Bed House2, Ravenscroft, Harpenden, AL5 1ST2, Ravenscroft, Harpenden, AL5 1ST
• Sold Sep 2022£750,000 | 4 Bed House5, Ravenscroft, Harpenden, AL5 1ST5, Ravenscroft, Harpenden, AL5 1ST
• Sold Feb 2022£820,000 | 4 Bed House10, Magna Close, Harpenden, AL5 1RH10, Magna Close, Harpenden, AL5 1RH
• Sold Feb 2022£733,000 | 4 Bed House9, Ranleigh Walk, Harpenden, AL5 1SR9, Ranleigh Walk, Harpenden, AL5 1SR
• Sold Jan 2021£680,000 | 4 Bed House75, Coleswood Road, Harpenden, AL5 1EG75, Coleswood Road, Harpenden, AL5 1EG
• Sold May 2020£610,000 | 4 Bed House65, Broadstone Road, Harpenden, AL5 1RE65, Broadstone Road, Harpenden, AL5 1RE
• Sold Sep 2019£710,000 | 4 Bed House6, Magna Close, Harpenden, AL5 1RH6, Magna Close, Harpenden, AL5 1RH
• Sold Nov 2018£640,000 | 4 Bed House7, Knowle Drive, Harpenden, AL5 1RW7, Knowle Drive, Harpenden, AL5 1RW

Knowle Drive, Harpenden, AL5 has a total of 34 addresses. According to our analysis of all the public data, 10, Knowle Drive, Harpenden is the largest and the 4th most expensive property on the street.

When compared to the postcode district it is £198k less expensive than the average property in AL5.

• The Grove Infant and Nursery School

  400 m away
• The Grove Junior School

  400 m away
• High Beeches Primary School

  1.0 km away

• Sir John Lawes School

  2.0 km away
• Katherine Warington School

  2.0 km away
• St George's School

  2.2 km away

• Harpenden

  |

  1.4 km away
• St Albans City

  |

  6.1 km away
• St Albans Abbey

  |

  6.7 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.