HM Land Registry records the plot of land for 51, Ox Lane, Harpenden as measuring 501 m².

That makes it the 12th largest plot in the postcode, where 19 of the 23 other houses have recorded plot data.

51, Ox Lane, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 10 Jan 2020.

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

The most recent sale of 51, Ox Lane, Harpenden completed on 30th October 2020 at £1,325,000 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 25.3% over the period since October 2020.

• Sold Oct 2020£1,325,000

Since 2011 34 properties similar to 51, Ox Lane, Harpenden have sold within a radius of 680 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 14th November 2025, was 17, Ox Lane, Harpenden, AL5 4HF, a freehold house which sold for £1,435,000.

Read more about house prices in AL5.

• Sold Nov 2025£1,435,000 | 5 Bed House17, Ox Lane, Harpenden, AL5 4HF17, Ox Lane, Harpenden, AL5 4HF
• Sold Oct 2025£1,390,000 | 5 Bed House22, Lea Road, Harpenden, AL5 4PG22, Lea Road, Harpenden, AL5 4PG
• Sold Jul 2024£1,400,000 | 5 Bed House5, Jameson Road, Harpenden, AL5 4HG5, Jameson Road, Harpenden, AL5 4HG
• Sold Jan 2024£1,400,000 | 5 Bed House7, Jameson Road, Harpenden, AL5 4HG7, Jameson Road, Harpenden, AL5 4HG
• Sold Dec 2023£1,425,000 | 5 Bed House32, Lea Road, Harpenden, AL5 4PG32, Lea Road, Harpenden, AL5 4PG
• Sold Jun 2023£1,530,000 | 5 Bed House29, Ox Lane, Harpenden, AL5 4HF29, Ox Lane, Harpenden, AL5 4HF
• Sold Jan 2023£1,435,000 | 5 Bed House21, Ox Lane, Harpenden, AL5 4HF21, Ox Lane, Harpenden, AL5 4HF
• Sold Sep 2022£1,520,000 | 5 Bed House12, Westfield Avenue, Harpenden, AL5 4HN12, Westfield Avenue, Harpenden, AL5 4HN
• Sold Jan 2022£1,550,000 | 5 Bed House4, West Way, Harpenden, AL5 4RD4, West Way, Harpenden, AL5 4RD
• Sold Mar 2021£835,000 | 5 Bed House30, West Way, Harpenden, AL5 4RD30, West Way, Harpenden, AL5 4RD
• Sold Feb 2021£1,325,000 | 5 Bed House50, Cross Way, Harpenden, AL5 4QU50, Cross Way, Harpenden, AL5 4QU
• Sold Feb 2021£1,200,000 | 5 Bed House8, Hollybush Mews, Harpenden, AL5 4FR8, Hollybush Mews, Harpenden, AL5 4FR
• Sold Jan 2021£1,257,500 | 5 Bed House12, St. James Road, Harpenden, AL5 4NY12, St. James Road, Harpenden, AL5 4NY
• Sold Jan 2021£1,375,000 | 5 Bed House28, Manland Way, Harpenden, AL5 4QS28, Manland Way, Harpenden, AL5 4QS
• Sold Aug 2019£1,000,000 | 5 Bed House11, West Way, Harpenden, AL5 4RD11, West Way, Harpenden, AL5 4RD
• Sold Aug 2015£1,200,000 | 5 Bed House14, St. James Road, Harpenden, AL5 4NY14, St. James Road, Harpenden, AL5 4NY
• Sold Apr 2014£1,100,000 | 5 Bed House40, Ox Lane, Harpenden, AL5 4PJ40, Ox Lane, Harpenden, AL5 4PJ
• Sold Dec 2013£1,075,000 | 5 Bed House6, Westfield Avenue, Harpenden, AL5 4HN6, Westfield Avenue, Harpenden, AL5 4HN
• Sold Jun 2011£805,000 | 5 Bed House50, Sauncey Avenue, Harpenden, AL5 4QL50, Sauncey Avenue, Harpenden, AL5 4QL
• Sold Jun 2011£712,500 | 5 Bed House15, Lea Road, Harpenden, AL5 4PQ15, Lea Road, Harpenden, AL5 4PQ

Of the 99 addresses on Ox Lane, Harpenden, AL5, 51, Ox Lane, Harpenden comes out as the 7th largest and the 25th most expensive in our analysis of the public data.

It is also £421k more expensive than the average property across the AL5 district.

• Manland Primary School

  200 m away
• The Lea Primary School and Nursery

  600 m away
• Sauncey Wood Primary School

  900 m away

• Sir John Lawes School

  300 m away
• St George's School

  500 m away
• Katherine Warington School

  1.2 km away

• Harpenden

  |

  1.2 km away
• Luton Airport Parkway

  |

  6.2 km away
• Luton

  |

  7.8 km away

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