4, How Field, Harpenden occupies a 483 m² plot as recorded by HM Land Registry.

All 12 other houses in this postcode have recorded plot sizes, and this one ranks as the 5th largest.

4, How Field, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 18 May 2010.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

4, How Field, Harpenden last changed hands on 1st July 2010, selling for £810,000. 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 risen by 77.2% since July 2010.

• Sold Jul 2010£810,000
• Sold Nov 2002£500,000

Land Registry records and our Estate Agent network show 175 sales of comparable properties within 850 metres of 4, How Field, Harpenden since 2014.

Most recently, 3, How Field, Harpenden, AL5 3AU, a freehold house, sold at £1,150,000 on the 17th December 2025.

Read more about house prices in AL5.

• Sold Dec 2025£1,150,000 | 4 Bed House3, How Field, Harpenden, AL5 3AU3, How Field, Harpenden, AL5 3AU
• Sold Nov 2025£1,095,000 | 4 Bed House44, Park Mount, Harpenden, AL5 3AR44, Park Mount, Harpenden, AL5 3AR
• Sold Oct 2025£1,290,000 | 4 Bed House12, Lambourn Gardens, Harpenden, AL5 4DQ12, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Oct 2025£1,200,000 | 5 Bed House7, Carpenders Close, Harpenden, AL5 3HN7, Carpenders Close, Harpenden, AL5 3HN
• Sold Sep 2025£1,055,000 | 4 Bed House73, Park Rise, Harpenden, AL5 3AN73, Park Rise, Harpenden, AL5 3AN
• Sold Jul 2025£1,300,000 | 5 Bed House52, Roundwood Lane, Harpenden, AL5 3EP52, Roundwood Lane, Harpenden, AL5 3EP
• Sold Jan 2025£1,170,000 | 5 Bed House23, Wood End Hill, Harpenden, AL5 3EZ23, Wood End Hill, Harpenden, AL5 3EZ
• Sold Jan 2025£1,300,000 | 5 Bed House8, How Field, Harpenden, AL5 3AU8, How Field, Harpenden, AL5 3AU
• Sold Dec 2024£1,540,000 | 5 Bed House22, Roundwood Lane, Harpenden, AL5 3BZ22, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Jul 2024£1,200,000 | 4 Bed House49, Tuffnells Way, Harpenden, AL5 3HA49, Tuffnells Way, Harpenden, AL5 3HA
• Sold Jun 2024£920,000 | 4 Bed House26, Carpenders Close, Harpenden, AL5 3HN26, Carpenders Close, Harpenden, AL5 3HN
• Sold May 2024£1,360,000 | 4 Bed House1, Claygate Avenue, Harpenden, AL5 2HE1, Claygate Avenue, Harpenden, AL5 2HE
• Sold May 2023£1,010,000 | 4 Bed House37, Ridgewood Drive, Harpenden, AL5 3LJ37, Ridgewood Drive, Harpenden, AL5 3LJ
• Sold Apr 2023£1,125,000 | 4 Bed House32, Carpenders Close, Harpenden, AL5 3HN32, Carpenders Close, Harpenden, AL5 3HN
• Sold Mar 2022£1,325,000 | 4 Bed House58, Roundwood Lane, Harpenden, AL5 3EP58, Roundwood Lane, Harpenden, AL5 3EP
• Sold Jan 2022£1,185,000 | 4 Bed House54, Falconers Field, Harpenden, AL5 3ET54, Falconers Field, Harpenden, AL5 3ET
• Sold Oct 2020£1,000,000 | 4 Bed House98, Park Rise, Harpenden, AL5 3AN98, Park Rise, Harpenden, AL5 3AN
• Sold Nov 2019£850,000 | 4 Bed House10, Ashley Gardens, Harpenden, AL5 3EY10, Ashley Gardens, Harpenden, AL5 3EY
• Sold Mar 2019£950,000 | 4 Bed House9, Falconers Field, Harpenden, AL5 3EU9, Falconers Field, Harpenden, AL5 3EU
• Sold Aug 2014£765,000 | 4 Bed House58, Park Rise, Harpenden, AL5 3AL58, Park Rise, Harpenden, AL5 3AL

Our analysis of the public data ranks 4, How Field, Harpenden as the 5th largest and the 5th most expensive of the 12 addresses on How Field, Harpenden, AL5.

Against the AL5 postcode district average, it is £252k more expensive than the typical property.

• Roundwood Primary School

  600 m away
• Wood End School

  600 m away
• St Nicholas CofE VA Primary School

  1.3 km away

• Roundwood Park School

  500 m away
• St George's School

  1.4 km away
• Sir John Lawes School

  1.9 km away

• Harpenden

  |

  1.8 km away
• Luton Airport Parkway

  |

  5.6 km away
• Luton

  |

  7.0 km away

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