HM Land Registry records the plot of land for 7, Grasmere Avenue, Harpenden as measuring 757 m².

That makes it the 7th largest plot in the postcode, where 12 of the 14 other houses have recorded plot data.

7, Grasmere Avenue, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Jun 2024.

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 7, Grasmere Avenue, Harpenden completed on 22nd September 2025 at £1,700,000 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 risen by 1.3% over the period since September 2025.

Since 2009 46 properties similar to 7, Grasmere Avenue, Harpenden have sold within a radius of 600 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 7th May 2026, was 4, Lyndhurst Drive, Harpenden, AL5 5QN, a freehold house which sold for £2,070,000.

Read more about house prices in AL5.

• Sold May 2026£2,070,000 | 4 Bed House4, Lyndhurst Drive, Harpenden, AL5 5QN4, Lyndhurst Drive, Harpenden, AL5 5QN
• Sold Oct 2025£1,350,000 | 4 Bed House1, Devonshire Road, Harpenden, AL5 4TJ1, Devonshire Road, Harpenden, AL5 4TJ
• Sold Sep 2024£1,192,500 | 4 Bed House87, Overstone Road, Harpenden, AL5 5PL87, Overstone Road, Harpenden, AL5 5PL
• Sold Dec 2023£1,350,000 | 4 Bed House51, Dalkeith Road, Harpenden, AL5 5PP51, Dalkeith Road, Harpenden, AL5 5PP
• Sold Aug 2023£1,235,000 | 4 Bed House67, Station Road, Harpenden, AL5 4XF67, Station Road, Harpenden, AL5 4XF
• Sold Aug 2023£1,465,000 | 4 Bed House14, Dalkeith Road, Harpenden, AL5 5PW14, Dalkeith Road, Harpenden, AL5 5PW
• Sold Mar 2023£1,600,000 | 4 Bed House2, Grasmere Avenue, Harpenden, AL5 5PS2, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Sep 2022£1,810,000 | 4 Bed House28, Grasmere Avenue, Harpenden, AL5 5PS28, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Mar 2022£1,600,000 | 4 Bed House54, Dalkeith Road, Harpenden, AL5 5PW54, Dalkeith Road, Harpenden, AL5 5PW
• Sold Jun 2021£1,275,000 | 4 Bed House2, Browning Road, Harpenden, AL5 4TR2, Browning Road, Harpenden, AL5 4TR
• Sold Aug 2020£1,430,000 | 4 Bed House11, Dalkeith Road, Harpenden, AL5 5PP11, Dalkeith Road, Harpenden, AL5 5PP
• Sold Aug 2019£1,340,000 | 4 Bed House69, Dalkeith Road, Harpenden, AL5 5PP69, Dalkeith Road, Harpenden, AL5 5PP
• Sold Apr 2019£920,000 | 4 Bed House46, Granby Avenue, Harpenden, AL5 5QR46, Granby Avenue, Harpenden, AL5 5QR
• Sold Apr 2019£925,000 | 4 Bed House46A, Granby Avenue, Harpenden, AL5 5QR46A, Granby Avenue, Harpenden, AL5 5QR
• Sold Apr 2019£1,150,000 | 4 Bed House1, Sauncey Avenue, Harpenden, AL5 4QG1, Sauncey Avenue, Harpenden, AL5 4QG
• Sold Nov 2018£1,270,000 | 4 Bed House34, Dalkeith Road, Harpenden, AL5 5PW34, Dalkeith Road, Harpenden, AL5 5PW
• Sold Aug 2017£980,000 | 4 Bed House14, Granby Avenue, Harpenden, AL5 5QR14, Granby Avenue, Harpenden, AL5 5QR
• Sold Oct 2015£1,000,000 | 4 Bed House24, Granby Avenue, Harpenden, AL5 5QR24, Granby Avenue, Harpenden, AL5 5QR
• Sold Sep 2014£1,325,000 | 4 Bed House26, Grasmere Avenue, Harpenden, AL5 5PS26, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Dec 2009£775,000 | 4 Bed House6, Sauncey Avenue, Harpenden, AL5 4QF6, Sauncey Avenue, Harpenden, AL5 4QF

Of the 29 addresses on Grasmere Avenue, Harpenden, AL5, 7, Grasmere Avenue, Harpenden comes out as the 23rd largest and the 22nd most expensive in our analysis of the public data.

It is also £603k more expensive than the average property across the AL5 district.

• Crabtree Junior School

  100 m away
• Crabtree Infants' School

  200 m away
• High Beeches Primary School

  500 m away

• Sir John Lawes School

  700 m away
• Katherine Warington School

  900 m away
• St George's School

  1.0 km away

• Harpenden

  |

  800 m away
• Luton Airport Parkway

  |

  7.2 km away
• St Albans City

  |

  7.5 km away

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