1, How Field, Harpenden occupies a 442 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 8th largest.

1, How Field, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 26 Mar 2026.

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

1, How Field, Harpenden last changed hands on 22nd July 2013, selling for £950,000. 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 55.8% since July 2013.

• Sold Jul 2013£950,000
• Sold Dec 2009£675,000

Land Registry records and our Estate Agent network show 153 sales of comparable properties within 860 metres of 1, How Field, Harpenden since 2010.

Most recently, 19, Ridge Avenue, Harpenden, AL5 3LT, a freehold house, sold at £985,500 on the 12th November 2025.

Read more about house prices in AL5.

• Sold Nov 2025£985,500 | 4 Bed House19, Ridge Avenue, Harpenden, AL5 3LT19, Ridge Avenue, Harpenden, AL5 3LT
• Sold Oct 2025£1,200,000 | 4 Bed House46, Bloomfield Road, Harpenden, AL5 4DB46, Bloomfield Road, Harpenden, AL5 4DB
• Sold Oct 2025£1,510,000 | 4 Bed House4, Wood End Hill, Harpenden, AL5 3EZ4, Wood End Hill, Harpenden, AL5 3EZ
• Sold Jul 2024£1,000,000 | 4 Bed House2, High Ridge, Harpenden, AL5 3LL2, High Ridge, Harpenden, AL5 3LL
• Sold Mar 2024£970,000 | 4 Bed House11, Haslingden Close, Harpenden, AL5 3EW11, Haslingden Close, Harpenden, AL5 3EW
• Sold Dec 2022£875,000 | 4 Bed House35, Tuffnells Way, Harpenden, AL5 3HA35, Tuffnells Way, Harpenden, AL5 3HA
• Sold Sep 2022£1,103,178 | 4 Bed House59, Park Rise, Harpenden, AL5 3AP59, Park Rise, Harpenden, AL5 3AP
• Sold Jul 2022£1,065,000 | 4 Bed House9, Ashley Gardens, Harpenden, AL5 3EN9, Ashley Gardens, Harpenden, AL5 3EN
• Sold Jul 2022£995,000 | 4 Bed House32, Ashley Gardens, Harpenden, AL5 3EY32, Ashley Gardens, Harpenden, AL5 3EY
• Sold May 2022£1,025,000 | 4 Bed House51, Tuffnells Way, Harpenden, AL5 3HA51, Tuffnells Way, Harpenden, AL5 3HA
• Sold Mar 2022£1,125,000 | 4 Bed House4, Mayfield Close, Harpenden, AL5 3LG4, Mayfield Close, Harpenden, AL5 3LG
• Sold May 2021£852,500 | 4 Bed House3, Ridgewood Gardens, Harpenden, AL5 3NN3, Ridgewood Gardens, Harpenden, AL5 3NN
• Sold May 2021£1,095,000 | 4 Bed House6, Roundwood Lane, Harpenden, AL5 3BZ6, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Apr 2021£815,000 | 4 Bed House1, Carpenders Close, Harpenden, AL5 3HN1, Carpenders Close, Harpenden, AL5 3HN
• Sold Sep 2020£850,000 | 4 Bed House38, Falconers Field, Harpenden, AL5 3ES38, Falconers Field, Harpenden, AL5 3ES
• Sold May 2019£850,000 | 4 Bed House9A, How Field, Harpenden, AL5 3AU9A, How Field, Harpenden, AL5 3AU
• Sold Nov 2014£635,000 | 4 Bed House76, Park Rise, Harpenden, AL5 3AL76, Park Rise, Harpenden, AL5 3AL
• Sold Aug 2014£765,000 | 4 Bed House58, Park Rise, Harpenden, AL5 3AL58, Park Rise, Harpenden, AL5 3AL
• Sold May 2013£680,000 | 4 Bed House29, Ridgewood Drive, Harpenden, AL5 3LJ29, Ridgewood Drive, Harpenden, AL5 3LJ
• Sold Dec 2010£752,500 | 4 Bed House18, Roundwood Lane, Harpenden, AL5 3BZ18, Roundwood Lane, Harpenden, AL5 3BZ

Our analysis of the public data ranks 1, How Field, Harpenden as the 12th largest and the 11th most expensive of the 12 addresses on How Field, Harpenden, AL5.

Against the AL5 postcode district average, it is £117k 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.