According to data from HM Land Registry, 18, Hammondswick, Harpenden sits on a plot of 1,146 m².

We have plot size data on 17 out of 18 other houses in the postcode and 18, Hammondswick, Harpenden sits on the 9th largest plot.

18, Hammondswick, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 Aug 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, 18, Hammondswick, Harpenden was last sold on 3rd January 2019 for £1,175,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since January 2019, the market for similar properties has dropped by 11.0%.

• Sold Jan 2019£1,175,000

According to the Land Registry and our network of Estate Agents, there have been 84 sales of properties similar to 18, Hammondswick, Harpenden within a radius of 2.0 kilometres since 2013.

The most recent example is 7, The Chowns, Harpenden, AL5 2BN, a freehold house which sold for £1,850,000 on the 22nd September 2025.

Read more about house prices in AL5.

• Sold Sep 2025£1,850,000 | 5 Bed House7, The Chowns, Harpenden, AL5 2BN7, The Chowns, Harpenden, AL5 2BN
• Sold Sep 2025£1,750,000 | 5 Bed House6, Wheatfield Avenue, Harpenden, AL5 2NU6, Wheatfield Avenue, Harpenden, AL5 2NU
• Sold Jul 2025£1,850,000 | 5 Bed House36, The Uplands, Harpenden, AL5 2NZ36, The Uplands, Harpenden, AL5 2NZ
• Sold Jun 2025£1,750,000 | 5 Bed House6, The Chowns, Harpenden, AL5 2BN6, The Chowns, Harpenden, AL5 2BN
• Sold Mar 2025£1,637,500 | 5 Bed House3, The Chowns, Harpenden, AL5 2BN3, The Chowns, Harpenden, AL5 2BN
• Sold Sep 2024£2,200,000 | 5 Bed House5, The Chowns, Harpenden, AL5 2BN5, The Chowns, Harpenden, AL5 2BN
• Sold Jun 2024£1,465,000 | 5 Bed House15, Penny Croft, Harpenden, AL5 2PD15, Penny Croft, Harpenden, AL5 2PD
• Sold Apr 2023£1,595,000 | 5 Bed House14, Hawsley Road, Harpenden, AL5 2BL14, Hawsley Road, Harpenden, AL5 2BL
• Sold Jul 2022£1,952,000 | 5 Bed House29, Prospect Lane, Harpenden, AL5 2PL29, Prospect Lane, Harpenden, AL5 2PL
• Sold Feb 2022£1,960,000 | 5 Bed House8, Hammonds Hill, Harpenden, AL5 2LU8, Hammonds Hill, Harpenden, AL5 2LU
• Sold Jun 2021£2,800,000 | 5 Bed House7, Oak Way, Harpenden, AL5 2NT7, Oak Way, Harpenden, AL5 2NT
• Sold May 2021£1,737,500 | 5 Bed House3, Barlings Road, Harpenden, AL5 2AL3, Barlings Road, Harpenden, AL5 2AL
• Sold Sep 2019£1,500,000 | 5 Bed House2, Prospect Lane, Harpenden, AL5 2PL2, Prospect Lane, Harpenden, AL5 2PL
• Sold Jun 2019£1,268,000 | 5 Bed House4, Fairway Close, Harpenden, AL5 2NN4, Fairway Close, Harpenden, AL5 2NN
• Sold Aug 2018£1,295,000 | 5 Bed House9, Penny Croft, Harpenden, AL5 2PD9, Penny Croft, Harpenden, AL5 2PD
• Sold Apr 2018£1,445,000 | 5 Bed House23, Barlings Road, Harpenden, AL5 2AL23, Barlings Road, Harpenden, AL5 2AL
• Sold Mar 2018£1,575,000 | 5 Bed House14, Penny Croft, Harpenden, AL5 2PB14, Penny Croft, Harpenden, AL5 2PB
• Sold Nov 2016£1,587,500 | 5 Bed House4, Prospect Lane, Harpenden, AL5 2PL4, Prospect Lane, Harpenden, AL5 2PL
• Sold Jun 2013£1,240,000 | 5 Bed House20, Wheatfield Road, Harpenden, AL5 2NY20, Wheatfield Road, Harpenden, AL5 2NY
• Sold Jun 2013£1,130,000 | 5 Bed House11, Penny Croft, Harpenden, AL5 2PD11, Penny Croft, Harpenden, AL5 2PD

Our network of Estate Agents reports 2 lets within 2.0 kilometres of 18, Hammondswick, Harpenden over the last 2 years.

Most recently, 3, Childwick Green, St. Albans, AL3 6JJ, a freehold house, was let by Collinson Hall in April 2025.

• 
  Let Apr 2025£ Undisclosed | 2 Bed House3, Childwick Green, St. Albans, AL3 6JJ3, Childwick Green, St. Albans, AL3 6JJ
• 
  Let Jul 2023£ Undisclosed | 2 Bed House1, Childwick Green, St. Albans, AL3 6JJ1, Childwick Green, St. Albans, AL3 6JJ

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Hammondswick, Harpenden, AL5 has a total of 18 addresses. According to our analysis of all the public data, 18, Hammondswick, Harpenden is the 8th largest and the 8th most expensive property on the street.

When compared to the postcode district it is £842k more expensive than the average property in AL5.

• St Dominic Catholic Primary School

  2.1 km away
• The Grove Junior School

  2.4 km away
• The Grove Infant and Nursery School

  2.4 km away

• Townsend Church of England School

  2.7 km away
• Roundwood Park School

  2.9 km away
• St George's School

  3.2 km away

• Harpenden

  |

  2.4 km away
• St Albans City

  |

  5.5 km away
• St Albans Abbey

  |

  5.7 km away

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