HM Land Registry records the plot of land for 9, The Close, Harpenden as measuring 456 m².

That makes it the 18th largest plot in the postcode, where 37 of the 42 other houses have recorded plot data.

9, The Close, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Apr 2022.

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

The most recent sale of 9, The Close, Harpenden completed on 6th April 2001 at £390,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

• Sold Apr 2001£390,000

Since 2019 221 properties similar to 9, The Close, Harpenden have sold within a radius of 1.4 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 17th October 2025, was 7, Carpenders Close, Harpenden, AL5 3HN, a freehold house which sold for £1,200,000.

Read more about house prices in AL5.

• Sold Oct 2025£1,200,000 | 5 Bed House7, Carpenders Close, Harpenden, AL5 3HN7, Carpenders Close, Harpenden, AL5 3HN
• Sold Oct 2025£1,095,000 | 5 Bed House1, The Close, Harpenden, AL5 3NB1, The Close, Harpenden, AL5 3NB
• Sold Sep 2025£995,000 | 4 Bed House54, Carpenders Close, Harpenden, AL5 3HN54, Carpenders Close, Harpenden, AL5 3HN
• Sold Jan 2025£1,170,000 | 5 Bed House23, Wood End Hill, Harpenden, AL5 3EZ23, Wood End Hill, Harpenden, AL5 3EZ
• 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 Jun 2024£30,000 | 4 Bed HouseBartholomew House 1A, Farm Avenue, Harpenden, AL5 3LYBartholomew House 1A, Farm Avenue, Harpenden, AL5 3LY
• Sold May 2024£950,000 | 4 Bed House3, Carpenders Close, Harpenden, AL5 3HN3, Carpenders Close, Harpenden, AL5 3HN
• Sold May 2024£1,005,000 | 4 Bed House14, Ridge Avenue, Harpenden, AL5 3LU14, Ridge Avenue, Harpenden, AL5 3LU
• Sold Mar 2024£935,000 | 4 Bed House1, Shepherds Way, Harpenden, AL5 3HF1, Shepherds Way, Harpenden, AL5 3HF
• Sold Feb 2024£1,000,500 | 5 Bed House69, Derwent Road, Harpenden, AL5 3NY69, Derwent Road, Harpenden, AL5 3NY
• Sold Nov 2023£975,000 | 4 Bed House63, Derwent Road, Harpenden, AL5 3NY63, Derwent Road, Harpenden, AL5 3NY
• Sold Apr 2023£1,125,000 | 4 Bed House32, Carpenders Close, Harpenden, AL5 3HN32, Carpenders Close, Harpenden, AL5 3HN
• Sold Dec 2022£875,000 | 4 Bed House35, Tuffnells Way, Harpenden, AL5 3HA35, Tuffnells Way, Harpenden, AL5 3HA
• Sold Aug 2022£1,300,000 | 4 Bed House64A, Derwent Road, Harpenden, AL5 3NX64A, Derwent Road, Harpenden, AL5 3NX
• Sold Nov 2021£1,000,000 | 4 Bed House10, Carpenders Close, Harpenden, AL5 3HN10, Carpenders Close, Harpenden, AL5 3HN
• Sold Jun 2021£1,100,000 | 4 Bed House38, Carpenders Close, Harpenden, AL5 3HN38, Carpenders Close, Harpenden, AL5 3HN
• Sold Jan 2021£865,000 | 4 Bed House4, Carpenders Close, Harpenden, AL5 3HN4, Carpenders Close, Harpenden, AL5 3HN
• Sold Mar 2020£890,000 | 4 Bed House15, Crosspaths, Harpenden, AL5 3HB15, Crosspaths, Harpenden, AL5 3HB
• Sold Nov 2019£855,000 | 4 Bed House76, Derwent Road, Harpenden, AL5 3NX76, Derwent Road, Harpenden, AL5 3NX

Of the 49 addresses on The Close, Harpenden, AL5, 9, The Close, Harpenden comes out as the 11th largest and the 11th most expensive in our analysis of the public data.

It is also £115k 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

  2.0 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

  |

  4.8 km away
• Luton

  |

  6.1 km away

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