According to data from HM Land Registry, 3, Barns Dene, Harpenden sits on a plot of 715 m².

We have plot size data on 20 out of 20 other houses in the postcode and 3, Barns Dene, Harpenden sits on the 12th largest plot.

3, Barns Dene, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 25 Nov 2022.

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

According to HM Land Registry, 3, Barns Dene, Harpenden was last sold on 10th November 2023 for £1,450,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since November 2023, the market for similar properties has dropped by 26.4%.

• Sold Nov 2023£1,450,000

According to the Land Registry and our network of Estate Agents, there have been 109 sales of properties similar to 3, Barns Dene, Harpenden within a radius of 810 metres since 2007.

The most recent example is 22, Hartwell Gardens, Harpenden, AL5 2RW, a freehold house which sold for £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 May 2025£1,760,000 | 4 Bed House32, Roundwood Park, Harpenden, AL5 3AF32, Roundwood Park, Harpenden, AL5 3AF
• 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 Feb 2025£1,605,000 | 4 Bed House9, Pondwick Road, Harpenden, AL5 2HG9, 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 May 2024£1,360,000 | 4 Bed House1, Claygate Avenue, Harpenden, AL5 2HE1, Claygate Avenue, Harpenden, AL5 2HE
• Sold May 2024£1,260,000 | 4 Bed House6, Barns Dene, Harpenden, AL5 2HQ6, Barns Dene, Harpenden, AL5 2HQ
• Sold Feb 2024£1,810,001 | 5 Bed House22, Barns Dene, Harpenden, AL5 2HQ22, Barns Dene, Harpenden, AL5 2HQ
• 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 Jun 2022£1,605,000 | 5 Bed House52A, Townsend Lane, Harpenden, AL5 2RG52A, Townsend Lane, Harpenden, AL5 2RG
• 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 May 2020£1,150,000 | 5 Bed House23, Broadfields, Harpenden, AL5 2HJ23, Broadfields, Harpenden, AL5 2HJ
• Sold Sep 2017£1,190,700 | 5 Bed House4, Barns Dene, Harpenden, AL5 2HQ4, Barns Dene, Harpenden, AL5 2HQ
• Sold May 2015£1,320,000 | 5 Bed House19, Broadfields, Harpenden, AL5 2HJ19, Broadfields, Harpenden, AL5 2HJ
• Sold Oct 2011£970,000 | 5 Bed House41, Claygate Avenue, Harpenden, AL5 2HE41, Claygate Avenue, Harpenden, AL5 2HE
• Sold Aug 2007£900,000 | 5 Bed House18, Barns Dene, Harpenden, AL5 2HQ18, Barns Dene, Harpenden, AL5 2HQ

Barns Dene, Harpenden, AL5 has a total of 37 addresses. According to our analysis of all the public data, 3, Barns Dene, Harpenden is the 19th largest and the 20th most expensive property on the street.

When compared to the postcode district it is £605k more expensive than the average property in AL5.

• 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

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.