According to data from HM Land Registry, 25, Prospect Lane, Harpenden sits on a plot of 1,096 m².

We have plot size data on 30 out of 30 other houses in the postcode and 25, Prospect Lane, Harpenden sits on the 21st largest plot.

25, Prospect Lane, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 25 Mar 2010.

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, 25, Prospect Lane, Harpenden was last sold on 1st November 2010 for £1,152,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since November 2010, the market for similar properties has risen by 24.2%.

• Sold Nov 2010£1,152,000
• Sold Aug 2001£645,000

According to the Land Registry and our network of Estate Agents, there have been 65 sales of properties similar to 25, Prospect Lane, Harpenden within a radius of 2.2 kilometres since 2016.

The most recent example is 19, Hawsley Road, Harpenden, AL5 2BL, a freehold house which sold for £1,680,000 on the 28th August 2025.

Read more about house prices in AL5.

• Sold Aug 2025£1,680,000 | 5 Bed House19, Hawsley Road, Harpenden, AL5 2BL19, Hawsley Road, Harpenden, AL5 2BL
• Sold Apr 2025£1,650,000 | 5 Bed House10, The Chowns, Harpenden, AL5 2BN10, The Chowns, Harpenden, AL5 2BN
• Sold Mar 2025£1,750,000 | 5 Bed House34, The Uplands, Harpenden, AL5 2NZ34, The Uplands, Harpenden, AL5 2NZ
• Sold Nov 2024£1,395,000 | 5 Bed House17, Penny Croft, Harpenden, AL5 2PD17, Penny Croft, Harpenden, AL5 2PD
• Sold Oct 2024£1,800,000 | 5 Bed House20, The Deerings, Harpenden, AL5 2PE20, The Deerings, Harpenden, AL5 2PE
• Sold Sep 2024£1,845,000 | 5 Bed House15, Hammondswick, Harpenden, AL5 2NR15, Hammondswick, Harpenden, AL5 2NR
• Sold Jul 2024£1,800,000 | 5 Bed House23, The Uplands, Harpenden, AL5 2PG23, The Uplands, Harpenden, AL5 2PG
• Sold Jul 2024£1,325,000 | 5 Bed House17, Barlings Road, Harpenden, AL5 2AL17, Barlings Road, Harpenden, AL5 2AL
• Sold Apr 2024£1,310,000 | 5 Bed House19, The Deerings, Harpenden, AL5 2PF19, The Deerings, Harpenden, AL5 2PF
• Sold Dec 2023£1,325,000 | 4 Bed House16, Collens Road, Harpenden, AL5 2AJ16, Collens Road, Harpenden, AL5 2AJ
• Sold Nov 2023£1,650,000 | 5 Bed House3, Wheatfield Avenue, Harpenden, AL5 2NU3, Wheatfield Avenue, Harpenden, AL5 2NU
• Sold Sep 2023£1,500,000 | 5 Bed House16, The Deerings, Harpenden, AL5 2PE16, The Deerings, Harpenden, AL5 2PE
• Sold Jul 2023£1,305,500 | 5 Bed House10, Hammondswick, Harpenden, AL5 2NR10, Hammondswick, Harpenden, AL5 2NR
• Sold May 2023£1,500,000 | 5 Bed House1, Wheatfield Road, Harpenden, AL5 2NY1, Wheatfield Road, Harpenden, AL5 2NY
• Sold Sep 2022£1,795,000 | 5 Bed House6, Prospect Lane, Harpenden, AL5 2PL6, Prospect Lane, Harpenden, AL5 2PL
• Sold Aug 2021£1,850,000 | 5 Bed House40, The Uplands, Harpenden, AL5 2NZ40, The Uplands, Harpenden, AL5 2NZ
• Sold Jun 2021£1,300,000 | 5 Bed House8, Penny Croft, Harpenden, AL5 2PB8, Penny Croft, Harpenden, AL5 2PB
• Sold Jul 2020£1,300,000 | 5 Bed House27, Prospect Lane, Harpenden, AL5 2PL27, Prospect Lane, Harpenden, AL5 2PL
• Sold Mar 2019£1,220,000 | 5 Bed House6, Penny Croft, Harpenden, AL5 2PB6, Penny Croft, Harpenden, AL5 2PB
• Sold Nov 2016£928,000 | 5 Bed House35, The Deerings, Harpenden, AL5 2PF35, The Deerings, Harpenden, AL5 2PF

Our network of Estate Agents reports 2 lets within 2.2 kilometres of 25, 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, 25, Prospect Lane, Harpenden is the 30th largest and the 29th most expensive property on the street.

When compared to the postcode district it is £645k 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.