12, Devonshire Road, Harpenden occupies a 438 m² plot as recorded by HM Land Registry.

All 12 other houses in this postcode have recorded plot sizes, and this one ranks as the 4th largest.

12, Devonshire Road, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Jun 2022.

The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).

12, Devonshire Road, Harpenden last changed hands on 16th December 2022, selling for £1,210,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has dropped by 12.9% since December 2022.

• Sold Dec 2022£1,210,000

Land Registry records and our Estate Agent network show 31 sales of comparable properties within 630 metres of 12, Devonshire Road, Harpenden since 2007.

Most recently, 26, Cowper Road, Harpenden, AL5 5NG, a freehold house, sold at £961,000 on the 5th January 2026.

Read more about house prices in AL5.

• Sold Jan 2026£961,000 | 3 Bed House26, Cowper Road, Harpenden, AL5 5NG26, Cowper Road, Harpenden, AL5 5NG
• Sold Sep 2025£860,000 | 3 Bed House2, Amberley Close, Harpenden, AL5 4TX2, Amberley Close, Harpenden, AL5 4TX
• Sold Jul 2025£1,150,000 | 3 Bed House33, Cowper Road, Harpenden, AL5 5NF33, Cowper Road, Harpenden, AL5 5NF
• Sold Jan 2025£967,000 | 3 Bed House35, Cowper Road, Harpenden, AL5 5NF35, Cowper Road, Harpenden, AL5 5NF
• Sold Nov 2023£955,000 | 3 Bed House3, Forrester Mews, Harpenden, AL5 2FD3, Forrester Mews, Harpenden, AL5 2FD
• Sold Sep 2022£1,050,000 | 3 Bed House12, Arden Grove, Harpenden, AL5 4SJ12, Arden Grove, Harpenden, AL5 4SJ
• Sold May 2021£875,000 | 3 Bed House4, Devonshire Road, Harpenden, AL5 4TJ4, Devonshire Road, Harpenden, AL5 4TJ
• Sold May 2021£905,000 | 3 Bed House5, Amberley Close, Harpenden, AL5 4TX5, Amberley Close, Harpenden, AL5 4TX
• Sold Jun 2019£720,000 | 4 Bed House18, Stewart Road, Harpenden, AL5 4QB18, Stewart Road, Harpenden, AL5 4QB
• Sold Jun 2019£667,500 | 3 Bed House2, Tennyson Road, Harpenden, AL5 4BB2, Tennyson Road, Harpenden, AL5 4BB
• Sold Dec 2018£818,000 | 3 Bed House12, Sun Lane, Harpenden, AL5 4ET12, Sun Lane, Harpenden, AL5 4ET
• Sold Jun 2017£750,000 | 4 Bed House64, Cowper Road, Harpenden, AL5 5NG64, Cowper Road, Harpenden, AL5 5NG
• Sold Jun 2017£820,000 | 3 Bed House5, Overstone Road, Harpenden, AL5 5PN5, Overstone Road, Harpenden, AL5 5PN
• Sold Nov 2015£820,000 | 3 Bed House35, Cornwall Road, Harpenden, AL5 4TQ35, Cornwall Road, Harpenden, AL5 4TQ
• Sold Nov 2014£650,000 | 3 Bed House65, Cowper Road, Harpenden, AL5 5NJ65, Cowper Road, Harpenden, AL5 5NJ
• Sold Jul 2012£615,000 | 3 Bed House37, Cowper Road, Harpenden, AL5 5NF37, Cowper Road, Harpenden, AL5 5NF
• Sold Dec 2011£565,000 | 3 Bed House2, Devonshire Road, Harpenden, AL5 4TJ2, Devonshire Road, Harpenden, AL5 4TJ
• Sold Jan 2011£725,000 | 3 Bed House4, Cornwall Road, Harpenden, AL5 4TH4, Cornwall Road, Harpenden, AL5 4TH
• Sold Aug 2009£470,000 | 3 Bed House1A, Overstone Road, Harpenden, AL5 5PN1A, Overstone Road, Harpenden, AL5 5PN
• Sold Sep 2007£440,000 | 3 Bed House64B, Station Road, Harpenden, AL5 4TN64B, Station Road, Harpenden, AL5 4TN

Our analysis of the public data ranks 12, Devonshire Road, Harpenden as the 10th largest and the 9th most expensive of the 12 addresses on Devonshire Road, Harpenden, AL5.

Against the AL5 postcode district average, it is £87k more expensive than the typical property.

• Harpenden Academy

  300 m away
• St Nicholas CofE VA Primary School

  500 m away
• St Dominic Catholic Primary School

  600 m away

• St George's School

  600 m away
• Sir John Lawes School

  700 m away
• Katherine Warington School

  1.4 km away

• Harpenden

  |

  300 m away
• Luton Airport Parkway

  |

  6.9 km away
• St Albans City

  |

  7.6 km away

Environment Agency data suggests this area has a Very Low risk of flooding.