HM Land Registry records the plot of land for 42A, West Common, Harpenden as measuring 1,359 m².

That makes it the 3rd largest plot in the postcode, where 17 of the 19 other houses have recorded plot data.

42A, West Common, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 09 Nov 2017.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 42A, West Common, Harpenden completed on 5th February 2018 at £1,115,000 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 2.6% over the period since February 2018.

• Sold Feb 2018£1,115,000

Since 2018 40 properties similar to 42A, West Common, Harpenden have sold within a radius of 970 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 12th February 2026, was 2, Gibbs Close, Harpenden, AL5 1FA, a freehold house which sold for £1,325,000.

Read more about house prices in AL5.

• Sold Feb 2026£1,325,000 | 4 Bed House2, Gibbs Close, Harpenden, AL5 1FA2, Gibbs Close, Harpenden, AL5 1FA
• Sold Mar 2025£1,210,000 | 4 Bed House100, Cravells Road, Harpenden, AL5 1BQ100, Cravells Road, Harpenden, AL5 1BQ
• Sold Oct 2024£1,295,000 | 4 Bed House12, Gibbs Close, Harpenden, AL5 1FA12, Gibbs Close, Harpenden, AL5 1FA
• Sold Aug 2024£1,275,000 | 4 Bed House3, Rothamsted View, Harpenden, AL5 2FT3, Rothamsted View, Harpenden, AL5 2FT
• Sold May 2024£1,200,000 | 4 Bed House5, Rothamsted View, Harpenden, AL5 2FT5, Rothamsted View, Harpenden, AL5 2FT
• Sold Apr 2024£1,325,000 | 4 Bed House1, Rothamsted View, Harpenden, AL5 2FT1, Rothamsted View, Harpenden, AL5 2FT
• Sold Apr 2024£1,250,000 | 4 Bed House4, Rothamsted View, Harpenden, AL5 2FT4, Rothamsted View, Harpenden, AL5 2FT
• Sold Mar 2024£1,300,000 | 4 Bed House2, Rothamsted View, Harpenden, AL5 2FT2, Rothamsted View, Harpenden, AL5 2FT
• Sold Oct 2023£1,416,000 | 4 Bed House44, West Common, Harpenden, AL5 2JW44, West Common, Harpenden, AL5 2JW
• Sold Jun 2023£1,170,000 | 4 Bed House4, Hatching Green Close, Harpenden, AL5 2LB4, Hatching Green Close, Harpenden, AL5 2LB
• Sold Nov 2022£1,175,000 | 4 Bed House22, Sir Josephs Walk, Harpenden, AL5 2DT22, Sir Josephs Walk, Harpenden, AL5 2DT
• Sold Oct 2022£1,050,000 | 4 Bed House16, East Common, Harpenden, AL5 1BJ16, East Common, Harpenden, AL5 1BJ
• Sold Jul 2022£1,300,000 | 4 Bed House23, West Common, Harpenden, AL5 2JN23, West Common, Harpenden, AL5 2JN
• Sold Jun 2022£1,300,000 | 4 Bed House4A, Hatching Green Close, Harpenden, AL5 2LB4A, Hatching Green Close, Harpenden, AL5 2LB
• Sold Jan 2022£986,000 | 4 Bed House24, Crabtree Lane, Harpenden, AL5 5TE24, Crabtree Lane, Harpenden, AL5 5TE
• Sold Jan 2022£1,100,000 | 4 Bed House21, East Common, Harpenden, AL5 1BJ21, East Common, Harpenden, AL5 1BJ
• Sold Apr 2021£1,250,000 | 4 Bed House10, East Common, Harpenden, AL5 1BJ10, East Common, Harpenden, AL5 1BJ
• Sold Feb 2020£1,050,000 | 4 Bed House30, Southdown Road, Harpenden, AL5 1PF30, Southdown Road, Harpenden, AL5 1PF
• Sold Nov 2018£585,000 | 4 Bed House4 Thatched Cottages, Hatching Green, Harpenden, AL5 2JS4 Thatched Cottages, Hatching Green, Harpenden, AL5 2JS
• Sold Sep 2018£925,000 | 4 Bed House34, Southdown Road, Harpenden, AL5 1PF34, Southdown Road, Harpenden, AL5 1PF

Of the 135 addresses on West Common, Harpenden, AL5, 42A, West Common, Harpenden comes out as the 33rd largest and the 25th most expensive in our analysis of the public data.

It is also £377k more expensive than the average property across the AL5 district.

• St Dominic Catholic Primary School

  700 m away
• Harpenden Academy

  1.1 km away
• The Grove Junior School

  1.2 km away

• St George's School

  1.9 km away
• Sir John Lawes School

  2.0 km away
• Roundwood Park School

  2.0 km away

• Harpenden

  |

  1.0 km away
• St Albans City

  |

  6.4 km away
• St Albans Abbey

  |

  6.8 km away

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