HM Land Registry records the plot of land for 40, Townsend Lane, Harpenden as measuring 975 m².

That makes it the 4th largest plot in the postcode, where all 12 other houses have recorded plot data.

40, Townsend Lane, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 06 Nov 2020.

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 40, Townsend Lane, Harpenden completed on 20th May 2021 at £2,300,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 3 times.

Values of comparable properties have dropped by 5.0% over the period since May 2021.

• Sold May 2021£2,300,000
• Sold Feb 2009£1,150,000
• Sold Mar 2008£1,100,000

Since 2007 19 properties similar to 40, Townsend Lane, Harpenden have sold within a radius of 740 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 17th September 2025, was 11, Moreton End Lane, Harpenden, AL5 2EY, a freehold house which sold for £2,990,000.

Read more about house prices in AL5.

• Sold Sep 2025£2,990,000 | 5 Bed House11, Moreton End Lane, Harpenden, AL5 2EY11, Moreton End Lane, Harpenden, AL5 2EY
• Sold Jan 2022£3,090,000 | 5 Bed House24, Douglas Road, Harpenden, AL5 2EW24, Douglas Road, Harpenden, AL5 2EW
• Sold Jun 2021£2,050,000 | 5 Bed House19A, Park Avenue South, Harpenden, AL5 2DZ19A, Park Avenue South, Harpenden, AL5 2DZ
• Sold Aug 2020£2,410,000 | 5 Bed House28, Roundwood Park, Harpenden, AL5 3AF28, Roundwood Park, Harpenden, AL5 3AF
• Sold Aug 2019£2,200,000 | 5 Bed House2, Rosebery Avenue, Harpenden, AL5 2QP2, Rosebery Avenue, Harpenden, AL5 2QP
• Sold Aug 2018£2,000,000 | 5 Bed House6, Moreton End Lane, Harpenden, AL5 2EX6, Moreton End Lane, Harpenden, AL5 2EX
• Sold Jan 2018£1,975,000 | 5 Bed House23, Barns Dene, Harpenden, AL5 2HH23, Barns Dene, Harpenden, AL5 2HH
• Sold Aug 2017£2,350,000 | 5 Bed House5, Avenue St. Nicholas, Harpenden, AL5 2DE5, Avenue St. Nicholas, Harpenden, AL5 2DE
• Sold Mar 2017£2,135,000 | 5 Bed House8, Orchard Avenue, Harpenden, AL5 2DP8, Orchard Avenue, Harpenden, AL5 2DP
• Sold Nov 2016£1,745,000 | 5 Bed House14, Rosebery Avenue, Harpenden, AL5 2QP14, Rosebery Avenue, Harpenden, AL5 2QP
• Sold Aug 2016£1,850,000 | 5 Bed House82, Townsend Lane, Harpenden, AL5 2RQ82, Townsend Lane, Harpenden, AL5 2RQ
• Sold Apr 2015£1,700,000 | 5 Bed House12, Rosebery Avenue, Harpenden, AL5 2QP12, Rosebery Avenue, Harpenden, AL5 2QP
• Sold Aug 2014£3,250,000 | 5 Bed House35, Park Avenue North, Harpenden, AL5 2EE35, Park Avenue North, Harpenden, AL5 2EE
• Sold Sep 2013£1,475,000 | 5 Bed House14, Salisbury Avenue, Harpenden, AL5 2QG14, Salisbury Avenue, Harpenden, AL5 2QG
• Sold Jul 2013£1,300,000 | 5 Bed House8, Townsend Lane, Harpenden, AL5 2QE8, Townsend Lane, Harpenden, AL5 2QE
• Sold Jul 2013£1,950,000 | 5 Bed House66, Townsend Lane, Harpenden, AL5 2RG66, Townsend Lane, Harpenden, AL5 2RG
• Sold Aug 2011£1,500,000 | 5 Bed House1A, Roundwood Park, Harpenden, AL5 3AB1A, Roundwood Park, Harpenden, AL5 3AB
• Sold Jul 2009£875,000 | 5 Bed House62, Townsend Lane, Harpenden, AL5 2RG62, Townsend Lane, Harpenden, AL5 2RG
• Sold May 2007£785,000 | 5 Bed House5, Pondwick Road, Harpenden, AL5 2HG5, Pondwick Road, Harpenden, AL5 2HG

Of the 106 addresses on Townsend Lane, Harpenden, AL5, 40, Townsend Lane, Harpenden comes out as the 5th largest and the 6th most expensive in our analysis of the public data.

It is also £1.69m more expensive than the average property across the AL5 district.

• St Nicholas CofE VA Primary School

  500 m away
• Roundwood Primary School

  500 m away
• Harpenden Academy

  800 m away

• Roundwood Park School

  600 m away
• St George's School

  900 m away
• Sir John Lawes School

  1.4 km away

• Harpenden

  |

  1.0 km away
• Luton Airport Parkway

  |

  6.4 km away
• Luton

  |

  7.9 km away

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