According to data from HM Land Registry, 18, Barns Dene, Harpenden sits on a plot of 625 m².

We have plot size data on 17 out of 17 other houses in the postcode and 18, Barns Dene, Harpenden sits on the 12th largest plot.

According to HM Land Registry, 18, Barns Dene, Harpenden was last sold on 2nd August 2007 for £900,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since August 2007, the market for similar properties has risen by 31.4%.

• Sold Aug 2007£900,000
• Sold Aug 2005£450,000

According to the Land Registry and our network of Estate Agents, there have been 97 sales of properties similar to 18, Barns Dene, Harpenden within a radius of 880 metres since 2011.

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£1,260,000 | 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 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 May 2020£1,150,000 | 5 Bed House23, Broadfields, Harpenden, AL5 2HJ23, Broadfields, Harpenden, AL5 2HJ
• Sold Nov 2017£1,100,000 | 4 Bed House35, Barns Dene, Harpenden, AL5 2HH35, Barns Dene, Harpenden, AL5 2HH
• Sold Sep 2017£1,190,700 | 5 Bed House4, Barns Dene, Harpenden, AL5 2HQ4, Barns Dene, Harpenden, AL5 2HQ
• 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

Barns Dene, Harpenden, AL5 has a total of 37 addresses. According to our analysis of all the public data, 18, Barns Dene, Harpenden is the 20th largest and the 16th most expensive property on the street.

When compared to the postcode district it is £654k more expensive than the average property in AL5.

• 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

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