HM Land Registry records the plot of land for 31, Park Mount, Harpenden as measuring 506 m².

That makes it the 5th largest plot in the postcode, where 19 of the 27 other houses have recorded plot data.

31, Park Mount, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 01 Feb 2024.

The property is not connected to mains gas and has high performance glazing. It is heated using air source heat pump (underfloor, electric).

The most recent sale of 31, Park Mount, Harpenden completed on 17th September 2020 at £569,006 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 19.1% over the period since September 2020.

• Sold Sep 2020£569,006
• Sold Nov 1996£114,000

Since 2014 83 properties similar to 31, Park Mount, Harpenden have sold within a radius of 720 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 29th January 2026, was 26, Roundwood Lane, Harpenden, AL5 3BZ, a freehold house which sold for £1,530,000.

Read more about house prices in AL5.

• Sold Jan 2026£1,530,000 | 5 Bed House26, Roundwood Lane, Harpenden, AL5 3BZ26, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Oct 2025£1,060,000 | 5 Bed House245, Luton Road, Harpenden, AL5 3DE245, Luton Road, Harpenden, AL5 3DE
• Sold Sep 2025£1,860,000 | 5 Bed House14, Bloomfield Road, Harpenden, AL5 4DB14, Bloomfield Road, Harpenden, AL5 4DB
• Sold Jul 2025£1,305,000 | 4 Bed House12, Bloomfield Road, Harpenden, AL5 4DB12, Bloomfield Road, Harpenden, AL5 4DB
• Sold Mar 2025£1,375,000 | 5 Bed House30, Park Rise, Harpenden, AL5 3AL30, Park Rise, Harpenden, AL5 3AL
• Sold Jan 2025£1,300,000 | 5 Bed House8, How Field, Harpenden, AL5 3AU8, How Field, Harpenden, AL5 3AU
• Sold Dec 2024£1,540,000 | 5 Bed House22, Roundwood Lane, Harpenden, AL5 3BZ22, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Nov 2024£1,300,000 | 4 Bed House12A, Bloomfield Road, Harpenden, AL5 4DB12A, Bloomfield Road, Harpenden, AL5 4DB
• 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 Apr 2024£1,255,000 | 5 Bed House11, Lambourn Gardens, Harpenden, AL5 4DQ11, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Jun 2021£1,150,000 | 5 Bed House5, Lambourn Gardens, Harpenden, AL5 4DQ5, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Feb 2021£1,315,000 | 5 Bed House7, Park Rise, Harpenden, AL5 3AH7, Park Rise, Harpenden, AL5 3AH
• Sold Nov 2020£1,400,000 | 5 Bed House18, Hillside Road, Harpenden, AL5 4BT18, Hillside Road, Harpenden, AL5 4BT
• Sold Nov 2020£1,100,000 | 5 Bed House47, Park Mount, Harpenden, AL5 3AS47, Park Mount, Harpenden, AL5 3AS
• Sold Sep 2019£1,010,000 | 5 Bed House26, Park Mount, Harpenden, AL5 3AR26, Park Mount, Harpenden, AL5 3AR
• Sold Feb 2019£935,000 | 5 Bed House36, Park Mount, Harpenden, AL5 3AR36, Park Mount, Harpenden, AL5 3AR
• Sold Sep 2017£1,531,000 | 5 Bed House36, Park Hill, Harpenden, AL5 3AT36, Park Hill, Harpenden, AL5 3AT
• Sold Jun 2017£1,010,000 | 5 Bed House28, Park Hill, Harpenden, AL5 3AT28, Park Hill, Harpenden, AL5 3AT
• Sold May 2014£800,000 | 5 Bed House29, Harpenden Rise, Harpenden, AL5 3BG29, Harpenden Rise, Harpenden, AL5 3BG

Of the 70 addresses on Park Mount, Harpenden, AL5, 31, Park Mount, Harpenden comes out as the 2nd largest and the 2nd most expensive in our analysis of the public data.

It is also £282k more expensive than the average property across the AL5 district.

• Roundwood Primary School

  500 m away
• St Nicholas CofE VA Primary School

  900 m away
• Wood End School

  1.1 km away

• Roundwood Park School

  500 m away
• St George's School

  900 m away
• Sir John Lawes School

  1.4 km away

• Harpenden

  |

  1.3 km away
• Luton Airport Parkway

  |

  5.9 km away
• Luton

  |

  7.4 km away

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