According to data from HM Land Registry, 18, Prospect Lane, Harpenden sits on a plot of 1,364 m².

We have plot size data on 30 out of 30 other houses in the postcode and 18, Prospect Lane, Harpenden sits on the 8th largest plot.

18, Prospect Lane, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 14 Nov 2024.

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

According to HM Land Registry, 18, Prospect Lane, Harpenden was last sold on 3rd September 2021 for £1,650,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since September 2021, the market for similar properties has dropped by 21.0%.

• Sold Sep 2021£1,650,000

According to the Land Registry and our network of Estate Agents, there have been 63 sales of properties similar to 18, Prospect Lane, Harpenden within a radius of 2.1 kilometres since 2007.

The most recent example is 18, The Deerings, Harpenden, AL5 2PE, a freehold house which sold for £1,850,000 on the 30th April 2025.

Read more about house prices in AL5.

• Sold Apr 2025£1,850,000 | 5 Bed House18, The Deerings, Harpenden, AL5 2PE18, The Deerings, Harpenden, AL5 2PE
• Sold Nov 2024£2,285,000 | 5 Bed House23, The Deerings, Harpenden, AL5 2PF23, The Deerings, Harpenden, AL5 2PF
• Sold Sep 2024£2,200,000 | 5 Bed House5, The Chowns, Harpenden, AL5 2BN5, The Chowns, Harpenden, AL5 2BN
• Sold Sep 2024£2,225,000 | 5 Bed House20A, Oakfield Road, Harpenden, AL5 2NL20A, Oakfield Road, Harpenden, AL5 2NL
• Sold Mar 2024£1,750,000 | 5 Bed House14, Hammondswick, Harpenden, AL5 2NR14, Hammondswick, Harpenden, AL5 2NR
• Sold Feb 2023£2,040,000 | 5 Bed House1, Oakview Close, Harpenden, AL5 2PP1, Oakview Close, Harpenden, AL5 2PP
• Sold Jun 2022£2,200,000 | 5 Bed House40, Oakfield Road, Harpenden, AL5 2NS40, Oakfield Road, Harpenden, AL5 2NS
• Sold Sep 2021£2,050,000 | 5 Bed House30, The Uplands, Harpenden, AL5 2NZ30, The Uplands, Harpenden, AL5 2NZ
• Sold Jun 2021£1,975,000 | 5 Bed House17, Hammondswick, Harpenden, AL5 2NR17, Hammondswick, Harpenden, AL5 2NR
• Sold Jun 2021£2,800,000 | 5 Bed House7, Oak Way, Harpenden, AL5 2NT7, Oak Way, Harpenden, AL5 2NT
• Sold Jun 2021£650,000 | 5 Bed House6A, High Elms, Harpenden, AL5 2JU6A, High Elms, Harpenden, AL5 2JU
• Sold Feb 2021£1,850,000 | 5 Bed House11, The Chowns, Harpenden, AL5 2BN11, The Chowns, Harpenden, AL5 2BN
• Sold Nov 2020£1,625,000 | 5 Bed House30, Penny Croft, Harpenden, AL5 2PB30, Penny Croft, Harpenden, AL5 2PB
• Sold Sep 2020£1,920,000 | 5 Bed House4B, High Elms, Harpenden, AL5 2JU4B, High Elms, Harpenden, AL5 2JU
• Sold Jun 2019£1,770,000 | 5 Bed House36, Oakfield Road, Harpenden, AL5 2NS36, Oakfield Road, Harpenden, AL5 2NS
• Sold Jan 2019£1,175,000 | 5 Bed House18, Hammondswick, Harpenden, AL5 2NR18, Hammondswick, Harpenden, AL5 2NR
• Sold Oct 2013£1,620,000 | 5 Bed House1, Prospect Lane, Harpenden, AL5 2PL1, Prospect Lane, Harpenden, AL5 2PL
• Sold Jun 2013£1,130,000 | 5 Bed House11, Penny Croft, Harpenden, AL5 2PD11, Penny Croft, Harpenden, AL5 2PD
• Sold Mar 2008£2,475,000 | 5 Bed House3, Oak Way, Harpenden, AL5 2NT3, Oak Way, Harpenden, AL5 2NT
• Sold Oct 2007£1,920,000 | 5 Bed House35, Prospect Lane, Harpenden, AL5 2PL35, Prospect Lane, Harpenden, AL5 2PL

Our network of Estate Agents reports 2 lets within 2.1 kilometres of 18, Prospect Lane, Harpenden over the last 2 years.

Most recently, 3, Childwick Green, St. Albans, AL3 6JJ, a freehold house, was let by Collinson Hall in April 2025.

• 
  Let Apr 2025£ Undisclosed | 2 Bed House3, Childwick Green, St. Albans, AL3 6JJ3, Childwick Green, St. Albans, AL3 6JJ
• 
  Let Jul 2023£ Undisclosed | 2 Bed House1, Childwick Green, St. Albans, AL3 6JJ1, Childwick Green, St. Albans, AL3 6JJ

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Prospect Lane, Harpenden, AL5 has a total of 30 addresses. According to our analysis of all the public data, 18, Prospect Lane, Harpenden is the 13th largest and the 14th most expensive property on the street.

When compared to the postcode district it is £1.039m more expensive than the average property in AL5.

• St Dominic Catholic Primary School

  2.3 km away
• The Grove Junior School

  2.5 km away
• The Grove Infant and Nursery School

  2.5 km away

• Townsend Church of England School

  2.5 km away
• Roundwood Park School

  3.1 km away
• St Albans Girls' School

  3.3 km away

• Harpenden

  |

  2.6 km away
• St Albans City

  |

  5.3 km away
• St Albans Abbey

  |

  5.5 km away

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