According to data from HM Land Registry, 12, Townsend Lane, Harpenden sits on a plot of 929 m².

We have plot size data on 8 out of 8 other houses in the postcode and 12, Townsend Lane, Harpenden sits on the 3rd largest plot.

12, Townsend Lane, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Sep 2021.

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, 12, Townsend Lane, Harpenden was last sold on 30th September 2022 for £1,575,000 and was recorded as a freehold house.

The property has had 3 sales since 1995.

Since September 2022, the market for similar properties has dropped by 12.1%.

• Sold Sep 2022£1,575,000
• Sold Dec 2004£620,000
• Sold May 1995£332,000

According to the Land Registry and our network of Estate Agents, there have been 72 sales of properties similar to 12, Townsend Lane, Harpenden within a radius of 670 metres since 2014.

The most recent example is 44, Park Mount, Harpenden, AL5 3AR, a freehold house which sold for £1,095,000 on the 13th November 2025.

Read more about house prices in AL5.

• Sold Nov 2025£1,095,000 | 4 Bed House44, Park Mount, Harpenden, AL5 3AR44, Park Mount, Harpenden, AL5 3AR
• Sold Oct 2025£1,290,000 | 4 Bed House12, Lambourn Gardens, Harpenden, AL5 4DQ12, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Sep 2025£1,160,000 | 4 Bed House4, Park Mount, Harpenden, AL5 3AR4, Park Mount, Harpenden, AL5 3AR
• Sold Mar 2025£1,020,000 | 4 Bed House10, Park Mount, Harpenden, AL5 3AR10, Park Mount, Harpenden, AL5 3AR
• Sold Oct 2024£1,225,000 | 4 Bed House11, Roundwood Gardens, Harpenden, AL5 3AJ11, Roundwood Gardens, Harpenden, AL5 3AJ
• Sold Aug 2024£1,225,000 | 4 Bed House26, Tennyson Road, Harpenden, AL5 4BB26, Tennyson Road, Harpenden, AL5 4BB
• Sold Jul 2024£1,150,000 | 5 Bed House93, Luton Road, Harpenden, AL5 3BA93, Luton Road, Harpenden, AL5 3BA
• Sold Jun 2024£1,125,000 | 5 Bed House16, Park Mount, Harpenden, AL5 3AR16, Park Mount, Harpenden, AL5 3AR
• Sold Oct 2023£875,000 | 4 Bed House75, Luton Road, Harpenden, AL5 3BA75, Luton Road, Harpenden, AL5 3BA
• Sold Dec 2022£1,515,000 | 4 Bed House39, Moreton End Lane, Harpenden, AL5 2HA39, Moreton End Lane, Harpenden, AL5 2HA
• Sold Jul 2022£1,730,000 | 4 Bed House67, Townsend Lane, Harpenden, AL5 2RE67, Townsend Lane, Harpenden, AL5 2RE
• Sold Dec 2021£1,232,000 | 5 Bed House1 Lavendon, Aplins Close, Harpenden, AL5 2RJ1 Lavendon, Aplins Close, Harpenden, AL5 2RJ
• Sold Sep 2021£1,240,000 | 4 Bed House17, Longcroft Avenue, Harpenden, AL5 2RD17, Longcroft Avenue, Harpenden, AL5 2RD
• Sold Jun 2021£1,150,000 | 5 Bed House5, Lambourn Gardens, Harpenden, AL5 4DQ5, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Dec 2020£900,000 | 4 Bed House39, Aplins Close, Harpenden, AL5 2PZ39, Aplins Close, Harpenden, AL5 2PZ
• Sold Jun 2017£1,010,000 | 5 Bed House28, Park Hill, Harpenden, AL5 3AT28, Park Hill, Harpenden, AL5 3AT
• Sold Apr 2017£885,000 | 4 Bed House14, Lambourn Gardens, Harpenden, AL5 4DQ14, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Jan 2015£870,000 | 4 Bed House15, Lambourn Gardens, Harpenden, AL5 4DQ15, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold May 2014£800,000 | 5 Bed House29, Harpenden Rise, Harpenden, AL5 3BG29, Harpenden Rise, Harpenden, AL5 3BG
• Sold Apr 2014£1,200,000 | 4 Bed House14, Townsend Lane, Harpenden, AL5 2QE14, Townsend Lane, Harpenden, AL5 2QE

Townsend Lane, Harpenden, AL5 has a total of 106 addresses. According to our analysis of all the public data, 12, Townsend Lane, Harpenden is the 51st largest and the 80th most expensive property on the street.

When compared to the postcode district it is £186k more expensive than the average property in AL5.

• St Nicholas CofE VA Primary School

  300 m away
• Roundwood Primary School

  700 m away
• Harpenden Academy

  700 m away

• St George's School

  700 m away
• Roundwood Park School

  700 m away
• Sir John Lawes School

  1.2 km away

• Harpenden

  |

  800 m away
• Luton Airport Parkway

  |

  6.4 km away
• Luton

  |

  7.9 km away

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