According to data from HM Land Registry, 20, Sun Lane, Harpenden sits on a plot of 1,441 m².

We have plot size data on 5 out of 5 other houses in the postcode and 20, Sun Lane, Harpenden sits on the largest plot.

20, Sun Lane, Harpenden has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 23 Sep 2014.

The property is connected to mains gas and has some double glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 20, Sun Lane, Harpenden was last sold on 31st October 2014 for £1,400,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since October 2014, the market for similar properties has risen by 15.9%.

• Sold Oct 2014£1,400,000

According to the Land Registry and our network of Estate Agents, there have been 79 sales of properties similar to 20, Sun Lane, Harpenden within a radius of 640 metres since 2017.

The most recent example is 1, Townsend Lane, Harpenden, AL5 2PY, a freehold house which sold for £950,000 on the 8th May 2026.

Read more about house prices in AL5.

• Sold May 2026£950,000 | 5 Bed House1, Townsend Lane, Harpenden, AL5 2PY1, Townsend Lane, Harpenden, AL5 2PY
• Sold Aug 2025£1,575,000 | 5 Bed House1A, Cowper Road, Harpenden, AL5 5NF1A, Cowper Road, Harpenden, AL5 5NF
• Sold Aug 2025£1,950,000 | 5 Bed House23, Stewart Road, Harpenden, AL5 4QE23, Stewart Road, Harpenden, AL5 4QE
• Sold Apr 2025£1,675,000 | 5 Bed House11, Pigeonwick, Harpenden, AL5 4EZ11, Pigeonwick, Harpenden, AL5 4EZ
• Sold Nov 2024£1,690,000 | 5 Bed House19, Fallows Green, Harpenden, AL5 4HD19, Fallows Green, Harpenden, AL5 4HD
• Sold Oct 2024£2,050,000 | 5 Bed House4A, Salisbury Avenue, Harpenden, AL5 2QG4A, Salisbury Avenue, Harpenden, AL5 2QG
• Sold Aug 2024£2,000,000 | 5 Bed House11A, Salisbury Avenue, Harpenden, AL5 2QF11A, Salisbury Avenue, Harpenden, AL5 2QF
• Sold Apr 2024£1,950,000 | 5 Bed House21, Townsend Lane, Harpenden, AL5 2PY21, Townsend Lane, Harpenden, AL5 2PY
• Sold Mar 2024£1,573,000 | 5 Bed House1, Grant Gardens, Harpenden, AL5 4QD1, Grant Gardens, Harpenden, AL5 4QD
• Sold Jun 2023£1,600,000 | 5 Bed House5, Douglas Road, Harpenden, AL5 2EN5, Douglas Road, Harpenden, AL5 2EN
• Sold Jun 2022£1,800,000 | 5 Bed House17, Bowers Way, Harpenden, AL5 4EP17, Bowers Way, Harpenden, AL5 4EP
• Sold Jun 2021£1,578,000 | 5 Bed House12, Townsend Road, Harpenden, AL5 4BQ12, Townsend Road, Harpenden, AL5 4BQ
• Sold Jan 2021£150,000 | 5 Bed House1, Kirkdale Road, Harpenden, AL5 2PT1, Kirkdale Road, Harpenden, AL5 2PT
• Sold Jul 2019£1,610,000 | 5 Bed House11, Townsend Lane, Harpenden, AL5 2PY11, Townsend Lane, Harpenden, AL5 2PY
• Sold May 2019£1,387,500 | 5 Bed House10, Hales Meadow, Harpenden, AL5 4JB10, Hales Meadow, Harpenden, AL5 4JB
• Sold Oct 2018£1,425,000 | 5 Bed House30, Wordsworth Road, Harpenden, AL5 4AF30, Wordsworth Road, Harpenden, AL5 4AF
• Sold Sep 2018£1,525,000 | 5 Bed House7, Hales Meadow, Harpenden, AL5 4JB7, Hales Meadow, Harpenden, AL5 4JB
• Sold Jul 2017£1,560,000 | 5 Bed House7, Douglas Road, Harpenden, AL5 2EN7, Douglas Road, Harpenden, AL5 2EN
• Sold Mar 2017£1,700,000 | 5 Bed House4, Bowers Way, Harpenden, AL5 4EW4, Bowers Way, Harpenden, AL5 4EW
• Sold Jan 2017£1,545,000 | 5 Bed House36, Sun Lane, Harpenden, AL5 4HA36, Sun Lane, Harpenden, AL5 4HA

Sun Lane, Harpenden, AL5 has a total of 78 addresses. According to our analysis of all the public data, 20, Sun Lane, Harpenden is the 4th largest and the 3rd most expensive property on the street.

When compared to the postcode district it is £909k more expensive than the average property in AL5.

• St Nicholas CofE VA Primary School

  300 m away
• Harpenden Academy

  400 m away
• Manland Primary School

  700 m away

• St George's School

  300 m away
• Sir John Lawes School

  700 m away
• Roundwood Park School

  1.2 km away

• Harpenden

  |

  600 m away
• Luton Airport Parkway

  |

  6.5 km away
• St Albans City

  |

  7.9 km away

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