HM Land Registry records the plot of land for 18, Broadstone Road, Harpenden as measuring 193 m².

That makes it the 8th largest plot in the postcode, where 14 of the 16 other houses have recorded plot data.

18, Broadstone Road, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 02 Mar 2016.

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 18, Broadstone Road, Harpenden completed on 23rd May 2016 at £428,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 50.9% over the period since May 2016.

• Sold May 2016£428,000
• Sold Jul 1999£122,500

Since 2017 192 properties similar to 18, Broadstone Road, Harpenden have sold within a radius of 610 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 4th November 2025, was 6, Broadstone Road, Harpenden, AL5 1RG, a freehold house which sold for £625,000.

Read more about house prices in AL5.

• Sold Nov 2025£625,000 | 3 Bed House6, Broadstone Road, Harpenden, AL5 1RG6, Broadstone Road, Harpenden, AL5 1RG
• Sold Dec 2024£595,000 | 3 Bed House8, St. Michaels Close, Harpenden, AL5 1EW8, St. Michaels Close, Harpenden, AL5 1EW
• Sold Nov 2024£535,000 | 3 Bed House24, Broadstone Road, Harpenden, AL5 1RG24, Broadstone Road, Harpenden, AL5 1RG
• Sold Aug 2024£550,000 | 3 Bed House50, Knowle Drive, Harpenden, AL5 1RW50, Knowle Drive, Harpenden, AL5 1RW
• Sold Jul 2024£550,000 | 3 Bed House14, Tarrant Drive, Harpenden, AL5 1RP14, Tarrant Drive, Harpenden, AL5 1RP
• Sold Jun 2024£625,000 | 3 Bed House9, Knowle Drive, Harpenden, AL5 1RW9, Knowle Drive, Harpenden, AL5 1RW
• Sold Nov 2023£560,000 | 3 Bed House33, Tarrant Drive, Harpenden, AL5 1RP33, Tarrant Drive, Harpenden, AL5 1RP
• Sold Nov 2023£590,000 | 3 Bed House7, Field Close, Harpenden, AL5 1EP7, Field Close, Harpenden, AL5 1EP
• Sold Nov 2023£420,000 | 3 Bed House7, Ravenscroft, Harpenden, AL5 1ST7, Ravenscroft, Harpenden, AL5 1ST
• Sold Sep 2023£545,000 | 3 Bed House12, Pendennis Court, Harpenden, AL5 1SG12, Pendennis Court, Harpenden, AL5 1SG
• Sold Oct 2022£590,000 | 3 Bed House44, Knowle Drive, Harpenden, AL5 1RW44, Knowle Drive, Harpenden, AL5 1RW
• Sold May 2022£550,000 | 3 Bed House7, Kingcroft Road, Harpenden, AL5 1EH7, Kingcroft Road, Harpenden, AL5 1EH
• Sold Apr 2022£575,000 | 3 Bed House14, Broadstone Road, Harpenden, AL5 1RG14, Broadstone Road, Harpenden, AL5 1RG
• Sold Feb 2022£592,000 | 3 Bed House6, Pendennis Court, Harpenden, AL5 1SG6, Pendennis Court, Harpenden, AL5 1SG
• Sold Nov 2021£540,000 | 3 Bed House16, Knowle Drive, Harpenden, AL5 1RW16, Knowle Drive, Harpenden, AL5 1RW
• Sold Dec 2020£470,000 | 3 Bed House14, Knowle Drive, Harpenden, AL5 1RW14, Knowle Drive, Harpenden, AL5 1RW
• Sold Jul 2020£535,000 | 3 Bed House1, Tarrant Drive, Harpenden, AL5 1RP1, Tarrant Drive, Harpenden, AL5 1RP
• Sold Aug 2019£475,000 | 3 Bed House6, Tarrant Drive, Harpenden, AL5 1RP6, Tarrant Drive, Harpenden, AL5 1RP
• Sold Nov 2018£450,000 | 3 Bed House2, Knowle Drive, Harpenden, AL5 1RW2, Knowle Drive, Harpenden, AL5 1RW
• Sold Aug 2017£447,500 | 3 Bed House20, Broadstone Road, Harpenden, AL5 1RG20, Broadstone Road, Harpenden, AL5 1RG

Of the 66 addresses on Broadstone Road, Harpenden, AL5, 18, Broadstone Road, Harpenden comes out as the 63rd largest and the 62nd most expensive in our analysis of the public data.

It is also £400k less expensive than the average property across the AL5 district.

• The Grove Infant and Nursery School

  400 m away
• The Grove Junior School

  400 m away
• High Beeches Primary School

  1.0 km away

• Katherine Warington School

  2.1 km away
• Sir John Lawes School

  2.1 km away
• St George's School

  2.3 km away

• Harpenden

  |

  1.5 km away
• St Albans City

  |

  6.0 km away
• St Albans Abbey

  |

  6.6 km away

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