According to data from HM Land Registry, 10, Prospect Lane, Harpenden sits on a plot of 1,351 m².

We have plot size data on 30 out of 30 other houses in the postcode and 10, Prospect Lane, Harpenden sits on the 11th largest plot.

10, Prospect Lane, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 20 Nov 2025.

The property is connected to mains gas and has high performance glazing. It is heated using ground source heat pump (underfloor, electric).

According to HM Land Registry, 10, Prospect Lane, Harpenden was last sold on 15th February 2012 for £1,280,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since February 2012, the market for similar properties has risen by 15.5%.

• Sold Feb 2012£1,280,000

According to the Land Registry and our network of Estate Agents, there have been 16 sales of properties similar to 10, Prospect Lane, Harpenden within a radius of 2.1 kilometres since 2010.

The most recent example is 20, Penny Croft, Harpenden, AL5 2PB, a freehold house which sold for £3,450,000 on the 28th March 2025.

Read more about house prices in AL5.

• Sold Mar 2025£3,450,000 | 5 Bed House20, Penny Croft, Harpenden, AL5 2PB20, Penny Croft, Harpenden, AL5 2PB
• Sold Apr 2019£2,900,000 | 5 Bed House45, Prospect Lane, Harpenden, AL5 2PL45, Prospect Lane, Harpenden, AL5 2PL
• Sold Sep 2018£2,680,000 | 5 Bed House11, Fairway Close, Harpenden, AL5 2NN11, Fairway Close, Harpenden, AL5 2NN
• Sold Apr 2018£2,203,000 | 5 Bed House39, Prospect Lane, Harpenden, AL5 2PL39, Prospect Lane, Harpenden, AL5 2PL
• Sold Mar 2018£2,900,000 | 5 Bed House3, Oakhurst Avenue, Harpenden, AL5 2NB3, Oakhurst Avenue, Harpenden, AL5 2NB
• Sold Mar 2018£1,475,000 | 5 Bed House12, Wheatfield Road, Harpenden, AL5 2NY12, Wheatfield Road, Harpenden, AL5 2NY
• Sold Nov 2017£1,415,000 | 5 Bed House27, Oakfield Road, Harpenden, AL5 2NW27, Oakfield Road, Harpenden, AL5 2NW
• Sold Sep 2017£2,350,000 | 5 Bed House24, Oakfield Road, Harpenden, AL5 2NS24, Oakfield Road, Harpenden, AL5 2NS
• Sold Jan 2017£2,700,000 | 5 Bed House6, The Uplands, Harpenden, AL5 2PH6, The Uplands, Harpenden, AL5 2PH
• Sold Aug 2016£975,000 | 5 Bed House12, Netherfield Road, Harpenden, AL5 2AG12, Netherfield Road, Harpenden, AL5 2AG
• Sold Jul 2015£2,680,000 | 5 Bed House13, The Uplands, Harpenden, AL5 2PG13, The Uplands, Harpenden, AL5 2PG
• Sold Mar 2015£2,274,332 | 5 Bed HouseOak Bank, West Common Close, Harpenden, AL5 2LJOak Bank, West Common Close, Harpenden, AL5 2LJ
• Sold Jan 2015£2,600,000 | 5 Bed House4, Oak Way, Harpenden, AL5 2NT4, Oak Way, Harpenden, AL5 2NT
• Sold Jan 2014£1,600,000 | 5 Bed House8, Oakfield Road, Harpenden, AL5 2NE8, Oakfield Road, Harpenden, AL5 2NE
• Sold Oct 2013£1,030,000 | 5 Bed House20, Prospect Lane, Harpenden, AL5 2PL20, Prospect Lane, Harpenden, AL5 2PL
• Sold Aug 2010£1,330,000 | 5 Bed House9, Oakhurst Avenue, Harpenden, AL5 2NB9, Oakhurst Avenue, Harpenden, AL5 2NB

Our network of Estate Agents reports 2 lets within 2.1 kilometres of 10, 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, 10, Prospect Lane, Harpenden is the largest and the 2nd most expensive property on the street.

When compared to the postcode district it is £2.241m 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.