29, Barns Dene, Harpenden occupies a 716 m² plot as recorded by HM Land Registry.

All 20 other houses in this postcode have recorded plot sizes, and this one ranks as the 10th largest.

29, Barns Dene, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Jul 2016.

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

29, Barns Dene, Harpenden last changed hands on 10th June 2021, selling for £1,525,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has dropped by 23.3% since June 2021.

• Sold Jun 2021£1,525,000
• Sold Jun 2006£800,000
• Sold Feb 2001£499,950

Land Registry records and our Estate Agent network show 75 sales of comparable properties within 940 metres of 29, Barns Dene, Harpenden since 2007.

Most recently, 22, Hartwell Gardens, Harpenden, AL5 2RW, a freehold house, sold at £1,750,000 on the 26th November 2025.

Read more about house prices in AL5.

• Sold Nov 2025£1,750,000 | 5 Bed House22, Hartwell Gardens, Harpenden, AL5 2RW22, Hartwell Gardens, Harpenden, AL5 2RW
• Sold Jun 2025£2,195,000 | 5 Bed House11C, Douglas Road, Harpenden, AL5 2EN11C, Douglas Road, Harpenden, AL5 2EN
• Sold Feb 2024£1,810,001 | 5 Bed House22, Barns Dene, Harpenden, AL5 2HQ22, Barns Dene, Harpenden, AL5 2HQ
• Sold Feb 2023£1,865,000 | 5 Bed House9, Maple Road, Harpenden, AL5 2DX9, Maple Road, Harpenden, AL5 2DX
• Sold Dec 2022£1,717,500 | 5 Bed House22A, Douglas Road, Harpenden, AL5 2EW22A, Douglas Road, Harpenden, AL5 2EW
• Sold Jul 2022£1,425,000 | 5 Bed House27, Claygate Avenue, Harpenden, AL5 2HE27, Claygate Avenue, Harpenden, AL5 2HE
• Sold Jun 2022£1,900,000 | 5 Bed House31, Claygate Avenue, Harpenden, AL5 2HE31, Claygate Avenue, Harpenden, AL5 2HE
• Sold Oct 2021£1,490,000 | 5 Bed House12, Barns Dene, Harpenden, AL5 2HQ12, Barns Dene, Harpenden, AL5 2HQ
• Sold Jun 2021£1,392,000 | 5 Bed House12, Roundwood Gardens, Harpenden, AL5 3AJ12, Roundwood Gardens, Harpenden, AL5 3AJ
• Sold Jan 2021£1,700,000 | 5 Bed House92, Townsend Lane, Harpenden, AL5 2RQ92, Townsend Lane, Harpenden, AL5 2RQ
• Sold Sep 2020£1,440,000 | 5 Bed House27, Townsend Lane, Harpenden, AL5 2QR27, Townsend Lane, Harpenden, AL5 2QR
• Sold Jul 2019£1,650,000 | 5 Bed House37, Moreton End Lane, Harpenden, AL5 2EY37, Moreton End Lane, Harpenden, AL5 2EY
• Sold Sep 2017£1,300,000 | 5 Bed House14, Hartwell Gardens, Harpenden, AL5 2RW14, Hartwell Gardens, Harpenden, AL5 2RW
• Sold Sep 2017£1,190,700 | 5 Bed House4, Barns Dene, Harpenden, AL5 2HQ4, Barns Dene, Harpenden, AL5 2HQ
• Sold Aug 2016£1,375,000 | 5 Bed House21, Barns Dene, Harpenden, AL5 2HH21, Barns Dene, Harpenden, AL5 2HH
• Sold May 2015£1,320,000 | 5 Bed House19, Broadfields, Harpenden, AL5 2HJ19, Broadfields, Harpenden, AL5 2HJ
• Sold Dec 2014£1,365,000 | 5 Bed House39, Barns Dene, Harpenden, AL5 2HH39, Barns Dene, Harpenden, AL5 2HH
• Sold Oct 2012£985,000 | 5 Bed House33, Barns Dene, Harpenden, AL5 2HH33, Barns Dene, Harpenden, AL5 2HH
• Sold Mar 2012£975,000 | 5 Bed House7, Claygate Avenue, Harpenden, AL5 2HE7, Claygate Avenue, Harpenden, AL5 2HE
• Sold Aug 2007£962,500 | 5 Bed House4, Claygate Avenue, Harpenden, AL5 2HF4, Claygate Avenue, Harpenden, AL5 2HF

Our analysis of the public data ranks 29, Barns Dene, Harpenden as the 6th largest and the 6th most expensive of the 37 addresses on Barns Dene, Harpenden, AL5.

Against the AL5 postcode district average, it is £820k more expensive than the typical property.

• Roundwood Primary School

  300 m away
• St Nicholas CofE VA Primary School

  800 m away
• Harpenden Academy

  1.1 km away

• Roundwood Park School

  300 m away
• St George's School

  1.2 km away
• Sir John Lawes School

  1.7 km away

• Harpenden

  |

  1.2 km away
• Luton Airport Parkway

  |

  6.4 km away
• Luton

  |

  7.8 km away

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