HM Land Registry records the plot of land for 30, Southdown Road, Harpenden as measuring 581 m².

That makes it the 6th largest plot in the postcode, where all 6 other houses have recorded plot data.

30, Southdown Road, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 07 Mar 2019.

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 30, Southdown Road, Harpenden completed on 28th February 2020 at £1,050,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have dropped by 0.1% over the period since February 2020.

• Sold Feb 2020£1,050,000
• Sold Oct 2002£500,000

Since 2017 87 properties similar to 30, Southdown Road, Harpenden have sold within a radius of 680 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 Sep 2025£1,395,000 | 4 Bed House30, Crabtree Lane, Harpenden, AL5 5NS30, Crabtree Lane, Harpenden, AL5 5NS
• Sold May 2025£1,270,000 | 4 Bed House8, Meadow Walk, Harpenden, AL5 5TG8, Meadow Walk, Harpenden, AL5 5TG
• Sold Mar 2025£1,375,000 | 4 Bed House115, Overstone Road, Harpenden, AL5 5PL115, Overstone Road, Harpenden, AL5 5PL
• Sold Oct 2024£1,295,000 | 4 Bed House12, Gibbs Close, Harpenden, AL5 1FA12, Gibbs Close, Harpenden, AL5 1FA
• Sold Nov 2022£1,175,000 | 4 Bed House22, Sir Josephs Walk, Harpenden, AL5 2DT22, Sir Josephs Walk, Harpenden, AL5 2DT
• Sold Apr 2022£1,500,000 | 4 Bed House1, Crabtree Lane, Harpenden, AL5 5TA1, Crabtree Lane, Harpenden, AL5 5TA
• Sold Sep 2021£1,055,000 | 4 Bed House17, Meadow Walk, Harpenden, AL5 5TF17, Meadow Walk, Harpenden, AL5 5TF
• Sold Jun 2021£915,000 | 4 Bed House6, Gibbs Close, Harpenden, AL5 1FA6, Gibbs Close, Harpenden, AL5 1FA
• Sold Feb 2021£950,000 | 4 Bed House5, Gibbs Close, Harpenden, AL5 1FA5, Gibbs Close, Harpenden, AL5 1FA
• Sold Dec 2020£955,000 | 4 Bed House22A, Spenser Road, Harpenden, AL5 5NN22A, Spenser Road, Harpenden, AL5 5NN
• Sold Nov 2020£995,000 | 4 Bed House22, Spenser Road, Harpenden, AL5 5NN22, Spenser Road, Harpenden, AL5 5NN
• Sold May 2020£1,060,000 | 4 Bed House11, Gibbs Close, Harpenden, AL5 1FA11, Gibbs Close, Harpenden, AL5 1FA
• Sold Jan 2020£917,342 | 4 Bed House75, Overstone Road, Harpenden, AL5 5PL75, Overstone Road, Harpenden, AL5 5PL
• Sold Sep 2019£1,300,000 | 4 Bed House14, Gibbs Close, Harpenden, AL5 1FA14, Gibbs Close, Harpenden, AL5 1FA
• Sold Aug 2019£1,322,500 | 4 Bed House10, Spenser Road, Harpenden, AL5 5NN10, Spenser Road, Harpenden, AL5 5NN
• Sold Jul 2019£1,224,000 | 4 Bed House10, Gibbs Close, Harpenden, AL5 1FA10, Gibbs Close, Harpenden, AL5 1FA
• Sold Oct 2018£1,137,500 | 4 Bed House41, Meadow Walk, Harpenden, AL5 5TF41, Meadow Walk, Harpenden, AL5 5TF
• Sold Sep 2018£925,000 | 4 Bed House34, Southdown Road, Harpenden, AL5 1PF34, Southdown Road, Harpenden, AL5 1PF
• Sold Nov 2017£965,000 | 4 Bed House31, Southdown Road, Harpenden, AL5 1PF31, Southdown Road, Harpenden, AL5 1PF

Of the 119 addresses on Southdown Road, Harpenden, AL5, 30, Southdown Road, Harpenden comes out as the 27th largest and the 17th most expensive in our analysis of the public data.

It is also £345k more expensive than the average property across the AL5 district.

• St Dominic Catholic Primary School

  100 m away
• Harpenden Academy

  500 m away
• St Nicholas CofE VA Primary School

  800 m away

• St George's School

  1.3 km away
• Sir John Lawes School

  1.3 km away
• Roundwood Park School

  1.8 km away

• Harpenden

  |

  400 m away
• St Albans City

  |

  6.9 km away
• St Albans Abbey

  |

  7.4 km away

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