HM Land Registry records the plot of land for 14, Sun Lane, Harpenden as measuring 678 m².

That makes it the 3rd largest plot in the postcode, where all 5 other houses have recorded plot data.

14, Sun Lane, Harpenden has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 20 Sep 2017.

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

The most recent sale of 14, Sun Lane, Harpenden completed on 27th April 2018 at £1,200,000 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 2.8% over the period since April 2018.

• Sold Apr 2018£1,200,000

Since 2013 95 properties similar to 14, Sun Lane, Harpenden have sold within a radius of 640 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 25th February 2026, was 10, Grant Gardens, Harpenden, AL5 4QD, a freehold house which sold for £1,530,000.

Read more about house prices in AL5.

• Sold Feb 2026£1,530,000 | 5 Bed House10, Grant Gardens, Harpenden, AL5 4QD10, Grant Gardens, Harpenden, AL5 4QD
• Sold Oct 2025£1,350,000 | 4 Bed House1, Devonshire Road, Harpenden, AL5 4TJ1, Devonshire Road, Harpenden, AL5 4TJ
• Sold Sep 2025£1,610,000 | 4 Bed House4, Townsend Lane, Harpenden, AL5 2QE4, Townsend Lane, Harpenden, AL5 2QE
• Sold Jul 2025£1,375,000 | 4 Bed House16, Hitherfield Lane, Harpenden, AL5 4JD16, Hitherfield Lane, Harpenden, AL5 4JD
• Sold Feb 2025£1,375,000 | 4 Bed House2, Cornwall Road, Harpenden, AL5 4TH2, Cornwall Road, Harpenden, AL5 4TH
• Sold Jan 2025£1,200,000 | 4 Bed House90, Station Road, Harpenden, AL5 4TY90, Station Road, Harpenden, AL5 4TY
• Sold Aug 2024£1,225,000 | 4 Bed House26, Tennyson Road, Harpenden, AL5 4BB26, Tennyson Road, Harpenden, AL5 4BB
• Sold Jan 2024£1,500,000 | 4 Bed House11B, Douglas Road, Harpenden, AL5 2EN11B, Douglas Road, Harpenden, AL5 2EN
• Sold Nov 2023£1,150,000 | 4 Bed House15, Cowper Road, Harpenden, AL5 5NF15, Cowper Road, Harpenden, AL5 5NF
• Sold Oct 2023£1,202,500 | 5 Bed House3, Tennyson Road, Harpenden, AL5 4BE3, Tennyson Road, Harpenden, AL5 4BE
• Sold Aug 2023£1,375,000 | 4 Bed House16, Stewart Road, Harpenden, AL5 4QB16, Stewart Road, Harpenden, AL5 4QB
• Sold Aug 2022£1,800,000 | 4 Bed House14, Bowers Way, Harpenden, AL5 4EW14, Bowers Way, Harpenden, AL5 4EW
• Sold Nov 2021£1,340,000 | 4 Bed House5, Grant Gardens, Harpenden, AL5 4QD5, Grant Gardens, Harpenden, AL5 4QD
• Sold Jun 2021£1,300,000 | 4 Bed House10, Elliswick Road, Harpenden, AL5 4TP10, Elliswick Road, Harpenden, AL5 4TP
• Sold May 2021£1,100,000 | 4 Bed House22, Wordsworth Road, Harpenden, AL5 4AF22, Wordsworth Road, Harpenden, AL5 4AF
• Sold Oct 2020£1,162,000 | 4 Bed House28, Tennyson Road, Harpenden, AL5 4BB28, Tennyson Road, Harpenden, AL5 4BB
• Sold Sep 2020£1,450,000 | 4 Bed House1, Hales Meadow, Harpenden, AL5 4JB1, Hales Meadow, Harpenden, AL5 4JB
• Sold Aug 2016£1,300,000 | 4 Bed House17, Townsend Lane, Harpenden, AL5 2PY17, Townsend Lane, Harpenden, AL5 2PY
• Sold Oct 2015£1,050,000 | 4 Bed House9, Grant Gardens, Harpenden, AL5 4QD9, Grant Gardens, Harpenden, AL5 4QD
• Sold Jan 2013£985,000 | 4 Bed House5, Bowers Way, Harpenden, AL5 4EP5, Bowers Way, Harpenden, AL5 4EP

Of the 78 addresses on Sun Lane, Harpenden, AL5, 14, Sun Lane, Harpenden comes out as the 8th largest and the 7th most expensive in our analysis of the public data.

It is also £453k more expensive than the average property across the AL5 district.

• 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

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