20, Prospect Lane, Harpenden occupies a 1,067 m² plot as recorded by HM Land Registry.

All 30 other houses in this postcode have recorded plot sizes, and this one ranks as the 25th largest.

20, Prospect Lane, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 21 Sep 2017.

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

20, Prospect Lane, Harpenden last changed hands on 21st October 2013, selling for £1,030,000. 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 8.7% since October 2013.

• Sold Oct 2013£1,030,000

Land Registry records and our Estate Agent network show 20 sales of comparable properties within 2.1 kilometres of 20, Prospect Lane, Harpenden since 2012.

Most recently, 20, Penny Croft, Harpenden, AL5 2PB, a freehold house, sold at £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 Sep 2024£3,500,000 | 5 Bed House22, The Uplands, Harpenden, AL5 2PQ22, The Uplands, Harpenden, AL5 2PQ
• Sold Feb 2023£3,000,000 | 5 Bed House9, Oak Way, Harpenden, AL5 2NT9, Oak Way, Harpenden, AL5 2NT
• Sold Apr 2019£2,900,000 | 5 Bed House45, Prospect Lane, Harpenden, AL5 2PL45, Prospect Lane, Harpenden, AL5 2PL
• 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 Sep 2017£1,382,500 | 5 Bed House17, The Uplands, Harpenden, AL5 2PG17, The Uplands, Harpenden, AL5 2PG
• Sold Aug 2017£1,950,000 | 5 Bed House24, Prospect Lane, Harpenden, AL5 2PL24, Prospect Lane, Harpenden, AL5 2PL
• Sold Nov 2016£2,500,000 | 5 Bed House14, The Uplands, Harpenden, AL5 2PQ14, The Uplands, Harpenden, AL5 2PQ
• Sold Aug 2015£2,650,000 | 5 Bed House36, West Common Way, Harpenden, AL5 2LG36, West Common Way, Harpenden, AL5 2LG
• 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 Nov 2014£1,800,000 | 5 Bed HouseEastmoor Lodge, East Common, Harpenden, AL5 1DAEastmoor Lodge, East Common, Harpenden, AL5 1DA
• Sold Jan 2014£1,600,000 | 5 Bed House8, Oakfield Road, Harpenden, AL5 2NE8, Oakfield Road, Harpenden, AL5 2NE
• Sold Apr 2013£1,500,000 | 5 Bed House15, The Chowns, Harpenden, AL5 2BN15, The Chowns, Harpenden, AL5 2BN
• Sold Feb 2012£1,280,000 | 5 Bed House10, Prospect Lane, Harpenden, AL5 2PL10, Prospect Lane, Harpenden, AL5 2PL

Agents in our network have reported 2 lettings within 2.1 kilometres of 20, Prospect Lane, Harpenden across the last 2 years.

The newest of these is 3, Childwick Green, St. Albans, AL3 6JJ, a freehold house 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.

Our analysis of the public data ranks 20, Prospect Lane, Harpenden as the 5th largest and the most expensive of the 30 addresses on Prospect Lane, Harpenden, AL5.

Against the AL5 postcode district average, it is £2.243m more expensive than the typical property.

• 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

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