34, Southdown Road, Harpenden occupies a 642 m² plot as recorded by HM Land Registry.

All 6 other houses in this postcode have recorded plot sizes, and this one ranks as the largest.

34, Southdown Road, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Oct 2019.

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

34, Southdown Road, Harpenden last changed hands on 6th September 2018, selling for £925,000. 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 risen by 3.3% since September 2018.

• Sold Sep 2018£925,000

Land Registry records and our Estate Agent network show 86 sales of comparable properties within 690 metres of 34, Southdown Road, Harpenden since 2014.

Most recently, 2, Gibbs Close, Harpenden, AL5 1FA, a freehold house, sold at £1,325,000 on the 12th February 2026.

Read more about house prices in AL5.

• Sold Feb 2026£1,325,000 | 4 Bed House2, Gibbs Close, Harpenden, AL5 1FA2, Gibbs Close, Harpenden, AL5 1FA
• Sold Oct 2024£1,295,000 | 4 Bed House12, Gibbs Close, Harpenden, AL5 1FA12, Gibbs Close, Harpenden, AL5 1FA
• Sold Jun 2024£970,000 | 4 Bed House20, Meadow Walk, Harpenden, AL5 5TG20, Meadow Walk, Harpenden, AL5 5TG
• 
  Sold Apr 2024£980,000 | 3 Bed House13, Gibbs Close, Harpenden, AL5 1FA13, Gibbs Close, Harpenden, AL5 1FA
• Sold Nov 2023£1,215,000 | 4 Bed House17, Cowper Road, Harpenden, AL5 5NF17, Cowper Road, Harpenden, AL5 5NF
• Sold Sep 2023£1,080,000 | 4 Bed House21, Sir Josephs Walk, Harpenden, AL5 2DT21, Sir Josephs Walk, Harpenden, AL5 2DT
• Sold Dec 2022£1,160,000 | 4 Bed House32, Meadow Walk, Harpenden, AL5 5TG32, Meadow Walk, Harpenden, AL5 5TG
• Sold Nov 2022£1,175,000 | 4 Bed House22, Sir Josephs Walk, Harpenden, AL5 2DT22, Sir Josephs Walk, Harpenden, AL5 2DT
• Sold Dec 2021£1,165,000 | 4 Bed House114, Topstreet Way, Harpenden, AL5 5TS114, Topstreet Way, Harpenden, AL5 5TS
• Sold Jun 2021£915,000 | 4 Bed House6, Gibbs Close, Harpenden, AL5 1FA6, Gibbs Close, Harpenden, AL5 1FA
• Sold Apr 2021£930,000 | 4 Bed House69, Topstreet Way, Harpenden, AL5 5TY69, Topstreet Way, Harpenden, AL5 5TY
• Sold Feb 2021£950,000 | 4 Bed House5, Gibbs Close, Harpenden, AL5 1FA5, Gibbs Close, Harpenden, AL5 1FA
• Sold Dec 2020£700,000 | 4 Bed House7, Gibbs Close, Harpenden, AL5 1FA7, Gibbs Close, Harpenden, AL5 1FA
• Sold May 2020£1,060,000 | 4 Bed House11, Gibbs Close, Harpenden, AL5 1FA11, Gibbs Close, Harpenden, AL5 1FA
• Sold Feb 2020£1,050,000 | 4 Bed House30, Southdown Road, Harpenden, AL5 1PF30, Southdown Road, Harpenden, AL5 1PF
• Sold Jan 2020£917,342 | 4 Bed House75, Overstone Road, Harpenden, AL5 5PL75, Overstone Road, Harpenden, AL5 5PL
• Sold Jul 2019£1,224,000 | 4 Bed House10, Gibbs Close, Harpenden, AL5 1FA10, Gibbs Close, Harpenden, AL5 1FA
• Sold Feb 2019£915,000 | 4 Bed House31, Meadow Walk, Harpenden, AL5 5TF31, Meadow Walk, Harpenden, AL5 5TF
• Sold Nov 2017£965,000 | 4 Bed House31, Southdown Road, Harpenden, AL5 1PF31, Southdown Road, Harpenden, AL5 1PF
• Sold Mar 2014£805,500 | 4 Bed House42, Meadow Walk, Harpenden, AL5 5TG42, Meadow Walk, Harpenden, AL5 5TG

Our analysis of the public data ranks 34, Southdown Road, Harpenden as the 31st largest and the 22nd most expensive of the 119 addresses on Southdown Road, Harpenden, AL5.

Against the AL5 postcode district average, it is £274k more expensive than the typical property.

• St Dominic Catholic Primary School

  100 m away
• Harpenden Academy

  500 m away
• St Nicholas CofE VA Primary School

  800 m away

• St George's School

  1.3 km away
• Sir John Lawes School

  1.3 km away
• Roundwood Park School

  1.8 km away

• Harpenden

  |

  400 m away
• St Albans City

  |

  6.9 km away
• St Albans Abbey

  |

  7.4 km away

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