11, The Warren, Harpenden occupies a 1,306 m² plot as recorded by HM Land Registry.

All 17 other houses in this postcode have recorded plot sizes, and this one ranks as the 15th largest.

11, The Warren, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 04 Oct 2013.

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

11, The Warren, Harpenden last changed hands on 6th December 2017, selling for £1,575,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 11.6% since December 2017.

• Sold Dec 2017£1,575,000
• Sold Apr 2002£700,000

Land Registry records and our Estate Agent network show 39 sales of comparable properties within 1.2 kilometres of 11, The Warren, Harpenden since 2010.

Most recently, 3, Netherfield Road, Harpenden, AL5 2AF, a freehold house, sold at £2,325,000 on the 29th October 2025.

Read more about house prices in AL5.

• Sold Oct 2025£2,325,000 | 5 Bed House3, Netherfield Road, Harpenden, AL5 2AF3, Netherfield Road, Harpenden, AL5 2AF
• Sold Oct 2024£2,470,000 | 5 Bed HouseArlington House, Oakhurst Avenue, Harpenden, AL5 2NDArlington House, Oakhurst Avenue, Harpenden, AL5 2ND
• Sold Sep 2024£2,225,000 | 5 Bed House20A, Oakfield Road, Harpenden, AL5 2NL20A, Oakfield Road, Harpenden, AL5 2NL
• Sold Apr 2024£2,287,000 | 5 Bed House14, Wheatfield Road, Harpenden, AL5 2NY14, Wheatfield Road, Harpenden, AL5 2NY
• Sold Jan 2024£2,650,000 | 5 Bed House2, The Uplands, Harpenden, AL5 2PH2, The Uplands, Harpenden, AL5 2PH
• Sold Aug 2023£2,325,000 | 5 Bed House21, West Common Grove, Harpenden, AL5 2AT21, West Common Grove, Harpenden, AL5 2AT
• Sold Dec 2021£2,600,000 | 5 Bed House7, High Elms, Harpenden, AL5 2JU7, High Elms, Harpenden, AL5 2JU
• Sold Nov 2021£1,600,000 | 5 Bed House71A, West Common, Harpenden, AL5 2LD71A, West Common, Harpenden, AL5 2LD
• Sold Sep 2021£2,050,000 | 5 Bed House30, The Uplands, Harpenden, AL5 2NZ30, The Uplands, Harpenden, AL5 2NZ
• Sold Feb 2021£1,850,000 | 5 Bed House11, The Chowns, Harpenden, AL5 2BN11, The Chowns, Harpenden, AL5 2BN
• Sold Dec 2020£1,900,000 | 5 Bed House9, Dellcroft Way, Harpenden, AL5 2NQ9, Dellcroft Way, Harpenden, AL5 2NQ
• Sold Oct 2020£1,900,000 | 5 Bed House21, Oakfield Road, Harpenden, AL5 2NW21, Oakfield Road, Harpenden, AL5 2NW
• Sold Sep 2020£1,920,000 | 5 Bed House4B, High Elms, Harpenden, AL5 2JU4B, High Elms, Harpenden, AL5 2JU
• Sold Dec 2019£1,870,000 | 5 Bed House2, The Warren, Harpenden, AL5 2NH2, The Warren, Harpenden, AL5 2NH
• Sold Jun 2019£2,275,000 | 5 Bed House31, West Common Way, Harpenden, AL5 2LH31, West Common Way, Harpenden, AL5 2LH
• Sold Jul 2018£1,600,000 | 5 Bed House8, The Warren, Harpenden, AL5 2NH8, The Warren, Harpenden, AL5 2NH
• Sold Jun 2016£1,975,000 | 5 Bed House20, High Elms, Harpenden, AL5 2JU20, High Elms, Harpenden, AL5 2JU
• Sold Jun 2014£1,250,000 | 5 Bed House14, The Warren, Harpenden, AL5 2NH14, The Warren, Harpenden, AL5 2NH
• Sold Jun 2013£1,525,000 | 5 Bed House11, Dellcroft Way, Harpenden, AL5 2NQ11, Dellcroft Way, Harpenden, AL5 2NQ
• Sold Jul 2010£1,675,000 | 5 Bed House4, Oakfield Road, Harpenden, AL5 2NE4, Oakfield Road, Harpenden, AL5 2NE

Our analysis of the public data ranks 11, The Warren, Harpenden as the 6th largest and the 7th most expensive of the 17 addresses on The Warren, Harpenden, AL5.

Against the AL5 postcode district average, it is £1.486m more expensive than the typical property.

• St Dominic Catholic Primary School

  1.3 km away
• The Grove Junior School

  1.6 km away
• The Grove Infant and Nursery School

  1.6 km away

• St George's School

  2.4 km away
• Roundwood Park School

  2.4 km away
• Sir John Lawes School

  2.6 km away

• Harpenden

  |

  1.6 km away
• St Albans City

  |

  5.9 km away
• St Albans Abbey

  |

  6.3 km away

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