HM Land Registry records the plot of land for 20C, The Close, Harpenden as measuring 694 m².

That makes it the 2nd largest plot in the postcode, where 4 of the 5 other houses have recorded plot data.

20C, The Close, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 26 Feb 2014.

The property is not connected to mains gas and has some double glazing. It is heated using a boiler and radiators (mains gas).

Since 2008 111 properties similar to 20C, The Close, Harpenden have sold within a radius of 1.5 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 15th December 2025, was 7, Miley Close, Harpenden, AL5 3DS, a freehold house which sold for £1,325,000.

Read more about house prices in AL5.

• Sold Dec 2025£1,325,000 | 5 Bed House7, Miley Close, Harpenden, AL5 3DS7, Miley Close, Harpenden, AL5 3DS
• Sold Nov 2025£1,450,000 | 5 Bed House8, Miley Close, Harpenden, AL5 3DS8, Miley Close, Harpenden, AL5 3DS
• Sold Oct 2025£1,200,000 | 5 Bed House7, Carpenders Close, Harpenden, AL5 3HN7, Carpenders Close, Harpenden, AL5 3HN
• Sold May 2025£1,400,000 | 5 Bed House66, Derwent Road, Harpenden, AL5 3NX66, Derwent Road, Harpenden, AL5 3NX
• Sold May 2025£1,450,000 | 5 Bed House31, Ridgewood Drive, Harpenden, AL5 3LJ31, Ridgewood Drive, Harpenden, AL5 3LJ
• Sold Jan 2025£1,170,000 | 5 Bed House23, Wood End Hill, Harpenden, AL5 3EZ23, Wood End Hill, Harpenden, AL5 3EZ
• Sold Mar 2023£1,200,000 | 5 Bed House18, Brackendale Grove, Harpenden, AL5 3EJ18, Brackendale Grove, Harpenden, AL5 3EJ
• Sold Mar 2023£1,250,000 | 5 Bed HouseGreenhaven, The Common, Harpenden, AL5 3NTGreenhaven, The Common, Harpenden, AL5 3NT
• Sold Feb 2023£1,260,000 | 5 Bed House21, Miley Close, Harpenden, AL5 3DS21, Miley Close, Harpenden, AL5 3DS
• Sold Jan 2023£1,335,000 | 5 Bed House20A, The Close, Harpenden, AL5 3NE20A, The Close, Harpenden, AL5 3NE
• Sold Nov 2022£1,285,000 | 5 Bed House15, Miley Close, Harpenden, AL5 3DS15, Miley Close, Harpenden, AL5 3DS
• Sold Dec 2021£1,325,000 | 5 Bed House17, Yeomans Avenue, Harpenden, AL5 3EH17, Yeomans Avenue, Harpenden, AL5 3EH
• Sold Jul 2019£1,035,000 | 5 Bed House61, Derwent Road, Harpenden, AL5 3NY61, Derwent Road, Harpenden, AL5 3NY
• Sold Jul 2019£1,325,000 | 5 Bed House35, Ridgewood Drive, Harpenden, AL5 3LJ35, Ridgewood Drive, Harpenden, AL5 3LJ
• Sold Jul 2019£1,240,000 | 5 Bed House17, Wood End Hill, Harpenden, AL5 3EZ17, Wood End Hill, Harpenden, AL5 3EZ
• Sold Jan 2018£440,000 | 5 Bed House22, The Close, Harpenden, AL5 3NB22, The Close, Harpenden, AL5 3NB
• Sold Jan 2017£250,000 | 5 Bed House34A, The Close, Harpenden, AL5 3NB34A, The Close, Harpenden, AL5 3NB
• Sold May 2016£1,135,000 | 5 Bed House16, Wood End Hill, Harpenden, AL5 3EZ16, Wood End Hill, Harpenden, AL5 3EZ
• Sold Dec 2013£985,000 | 5 Bed House15, Wood End Hill, Harpenden, AL5 3EZ15, Wood End Hill, Harpenden, AL5 3EZ
• Sold Nov 2008£725,000 | 5 Bed House18, The Close, Harpenden, AL5 3NB18, The Close, Harpenden, AL5 3NB

Of the 49 addresses on The Close, Harpenden, AL5, 20C, The Close, Harpenden comes out as the 6th largest and the 3rd most expensive in our analysis of the public data.

It is also £340k more expensive than the average property across the AL5 district.

• Wood End School

  400 m away
• Roundwood Primary School

  1.4 km away
• The Lea Primary School and Nursery

  2.1 km away

• Roundwood Park School

  1.3 km away
• St George's School

  2.2 km away
• Sir John Lawes School

  2.7 km away

• Harpenden

  |

  2.7 km away
• Luton Airport Parkway

  |

  4.9 km away
• Luton

  |

  6.2 km away

The flood risk here is rated Very Low, based on Environment Agency data.