HM Land Registry records the plot of land for 4, Barns Dene, Harpenden as measuring 612 m².

That makes it the 15th largest plot in the postcode, where all 17 other houses have recorded plot data.

4, Barns Dene, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 16 Mar 2017.

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 4, Barns Dene, Harpenden completed on 14th September 2017 at £1,190,700 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have dropped by 15.4% over the period since September 2017.

• Sold Sep 2017£1,190,700

Since 2011 89 properties similar to 4, Barns Dene, Harpenden have sold within a radius of 800 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 26th November 2025, was 22, Hartwell Gardens, Harpenden, AL5 2RW, a freehold house which sold for £1,750,000.

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 Apr 2025£1,370,000 | 5 Bed House43A, Moreton End Lane, Harpenden, AL5 2HA43A, Moreton End Lane, Harpenden, AL5 2HA
• Sold Mar 2025£1,615,000 | 5 Bed House45A, Moreton End Lane, Harpenden, AL5 2HA45A, Moreton End Lane, Harpenden, AL5 2HA
• Sold Oct 2024£1,560,000 | 5 Bed House3, Pondwick Road, Harpenden, AL5 2HG3, Pondwick Road, Harpenden, AL5 2HG
• Sold Sep 2024£1,470,000 | 5 Bed House19, Claygate Avenue, Harpenden, AL5 2HE19, Claygate Avenue, Harpenden, AL5 2HE
• Sold Sep 2024£1,835,000 | 5 Bed House8, Hartwell Gardens, Harpenden, AL5 2RW8, Hartwell Gardens, Harpenden, AL5 2RW
• Sold Aug 2024£1,685,000 | 5 Bed House24C, Douglas Road, Harpenden, AL5 2EW24C, Douglas Road, Harpenden, AL5 2EW
• Sold Feb 2024£1,810,001 | 5 Bed House22, Barns Dene, Harpenden, AL5 2HQ22, Barns Dene, Harpenden, AL5 2HQ
• Sold Nov 2023£1,700,000 | 5 Bed House44, Townsend Lane, Harpenden, AL5 2QS44, Townsend Lane, Harpenden, AL5 2QS
• Sold Nov 2023£1,450,000 | 5 Bed House3, Barns Dene, Harpenden, AL5 2HH3, Barns Dene, Harpenden, AL5 2HH
• Sold Aug 2023£1,325,000 | 5 Bed House45, Moreton End Lane, Harpenden, AL5 2HA45, Moreton End Lane, Harpenden, AL5 2HA
• Sold Aug 2022£1,825,000 | 5 Bed House24, Roundwood Park, Harpenden, AL5 3AF24, Roundwood Park, Harpenden, AL5 3AF
• Sold Oct 2021£1,490,000 | 5 Bed House12, Barns Dene, Harpenden, AL5 2HQ12, Barns Dene, Harpenden, AL5 2HQ
• Sold Aug 2020£1,089,000 | 5 Bed House12, Broadfields, Harpenden, AL5 2HJ12, Broadfields, Harpenden, AL5 2HJ
• 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 Oct 2011£970,000 | 5 Bed House41, Claygate Avenue, Harpenden, AL5 2HE41, Claygate Avenue, Harpenden, AL5 2HE
• Sold Jul 2011£855,000 | 5 Bed House21, Broadfields, Harpenden, AL5 2HJ21, Broadfields, Harpenden, AL5 2HJ

Of the 37 addresses on Barns Dene, Harpenden, AL5, 4, Barns Dene, Harpenden comes out as the 16th largest and the 11th most expensive in our analysis of the public data.

It is also £721k more expensive than the average property across the AL5 district.

• Roundwood Primary School

  200 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

  |

  1.3 km away
• Luton Airport Parkway

  |

  6.4 km away
• Luton

  |

  7.8 km away

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