According to data from HM Land Registry, 9, Grasmere Avenue, Harpenden sits on a plot of 849 m².

We have plot size data on 12 out of 14 other houses in the postcode and 9, Grasmere Avenue, Harpenden sits on the 6th largest plot.

9, Grasmere Avenue, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Mar 2022.

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

According to HM Land Registry, 9, Grasmere Avenue, Harpenden was last sold on 11th November 2022 for £2,100,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since November 2022, the market for similar properties has dropped by 10.4%.

According to the Land Registry and our network of Estate Agents, there have been 33 sales of properties similar to 9, Grasmere Avenue, Harpenden within a radius of 600 metres since 2007.

The most recent example is 4, Browning Road, Harpenden, AL5 4TR, a freehold house which sold for £2,100,000 on the 4th July 2025.

Read more about house prices in AL5.

• Sold Jul 2025£2,100,000 | 5 Bed House4, Browning Road, Harpenden, AL5 4TR4, Browning Road, Harpenden, AL5 4TR
• Sold Aug 2024£2,200,000 | 5 Bed House53, Milton Road, Harpenden, AL5 5LX53, Milton Road, Harpenden, AL5 5LX
• Sold Aug 2024£2,100,000 | 5 Bed House65, Dalkeith Road, Harpenden, AL5 5PP65, Dalkeith Road, Harpenden, AL5 5PP
• Sold Sep 2023£1,513,000 | 5 Bed House10, Dalkeith Road, Harpenden, AL5 5PW10, Dalkeith Road, Harpenden, AL5 5PW
• Sold Jun 2023£2,000,000 | 5 Bed House15, Grasmere Avenue, Harpenden, AL5 5PT15, Grasmere Avenue, Harpenden, AL5 5PT
• Sold Feb 2023£1,700,000 | 5 Bed House12, Gilpin Green, Harpenden, AL5 5NR12, Gilpin Green, Harpenden, AL5 5NR
• Sold Nov 2022£1,850,000 | 5 Bed House12, Grasmere Avenue, Harpenden, AL5 5PS12, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Oct 2022£1,975,000 | 5 Bed House24, Grasmere Avenue, Harpenden, AL5 5PS24, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Aug 2022£2,200,000 | 5 Bed House13, Browning Road, Harpenden, AL5 4TS13, Browning Road, Harpenden, AL5 4TS
• Sold Jun 2021£1,715,000 | 5 Bed House4, Eliot Place, Harpenden, AL5 5PE4, Eliot Place, Harpenden, AL5 5PE
• Sold May 2021£1,525,000 | 5 Bed House21, Grasmere Avenue, Harpenden, AL5 5PT21, Grasmere Avenue, Harpenden, AL5 5PT
• Sold Mar 2021£1,750,000 | 5 Bed House3, Browning Road, Harpenden, AL5 4TS3, Browning Road, Harpenden, AL5 4TS
• Sold Feb 2021£1,740,000 | 5 Bed House73, Dalkeith Road, Harpenden, AL5 5PP73, Dalkeith Road, Harpenden, AL5 5PP
• Sold Aug 2020£1,829,500 | 5 Bed House18, Browning Road, Harpenden, AL5 4TR18, Browning Road, Harpenden, AL5 4TR
• Sold May 2020£1,575,000 | 5 Bed House15, Browning Road, Harpenden, AL5 4TS15, Browning Road, Harpenden, AL5 4TS
• Sold Jan 2019£1,500,000 | 5 Bed House6, Browning Road, Harpenden, AL5 4TR6, Browning Road, Harpenden, AL5 4TR
• Sold May 2018£1,010,000 | 5 Bed House32, Granby Avenue, Harpenden, AL5 5QR32, Granby Avenue, Harpenden, AL5 5QR
• Sold Nov 2014£1,620,000 | 5 Bed House10, Sauncey Avenue, Harpenden, AL5 4QF10, Sauncey Avenue, Harpenden, AL5 4QF
• Sold Aug 2013£1,200,000 | 5 Bed House1, Elliswick Road, Harpenden, AL5 4TP1, Elliswick Road, Harpenden, AL5 4TP
• Sold Mar 2007£1,200,000 | 5 Bed House14, Grasmere Avenue, Harpenden, AL5 5PS14, Grasmere Avenue, Harpenden, AL5 5PS

Grasmere Avenue, Harpenden, AL5 has a total of 29 addresses. According to our analysis of all the public data, 9, Grasmere Avenue, Harpenden is the 10th largest and the 7th most expensive property on the street.

When compared to the postcode district it is £1.209m more expensive than the average property in AL5.

• 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

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