According to data from HM Land Registry, 44, Southdown Road, Harpenden sits on a plot of 1,042 m².

We have plot size data on 11 out of 12 other houses in the postcode and 44, Southdown Road, Harpenden sits on the largest plot.

44, Southdown Road, Harpenden has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 12 Oct 2016.

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

According to HM Land Registry, 44, Southdown Road, Harpenden was last sold on 18th January 2016 for £1,200,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since January 2016, the market for similar properties has risen by 9.8%.

• Sold Jan 2016£1,200,000

According to the Land Registry and our network of Estate Agents, there have been 48 sales of properties similar to 44, Southdown Road, Harpenden within a radius of 680 metres since 2009.

The most recent example is 8, Spenser Road, Harpenden, AL5 5NN, a freehold house which sold for £1,675,000 on the 18th December 2025.

Read more about house prices in AL5.

• Sold Dec 2025£1,675,000 | 5 Bed House8, Spenser Road, Harpenden, AL5 5NN8, Spenser Road, Harpenden, AL5 5NN
• Sold Oct 2025£1,525,000 | 5 Bed House23, Meadow Walk, Harpenden, AL5 5TF23, Meadow Walk, Harpenden, AL5 5TF
• Sold Sep 2025£1,395,000 | 4 Bed House30, Crabtree Lane, Harpenden, AL5 5NS30, Crabtree Lane, Harpenden, AL5 5NS
• Sold Aug 2025£1,530,565 | 5 Bed House1B, Crabtree Lane, Harpenden, AL5 5TA1B, Crabtree Lane, Harpenden, AL5 5TA
• Sold Jun 2025£1,680,000 | 4 Bed House26, Crabtree Lane, Harpenden, AL5 5TE26, Crabtree Lane, Harpenden, AL5 5TE
• Sold Mar 2025£1,595,000 | 5 Bed House23, Topstreet Way, Harpenden, AL5 5TU23, Topstreet Way, Harpenden, AL5 5TU
• Sold Feb 2025£1,465,000 | 5 Bed House4, Spenser Road, Harpenden, AL5 5NN4, Spenser Road, Harpenden, AL5 5NN
• Sold Feb 2025£1,550,000 | 5 Bed House18, Spenser Road, Harpenden, AL5 5NN18, Spenser Road, Harpenden, AL5 5NN
• Sold Jan 2024£1,350,000 | 5 Bed House15, Spenser Road, Harpenden, AL5 5NW15, Spenser Road, Harpenden, AL5 5NW
• Sold Oct 2023£1,185,000 | 5 Bed House25, Crabtree Lane, Harpenden, AL5 5NT25, Crabtree Lane, Harpenden, AL5 5NT
• Sold Oct 2023£1,465,000 | 5 Bed House43, Southdown Road, Harpenden, AL5 1PG43, Southdown Road, Harpenden, AL5 1PG
• Sold Mar 2021£1,010,000 | 5 Bed House8, Gibbs Close, Harpenden, AL5 1FA8, Gibbs Close, Harpenden, AL5 1FA
• Sold Sep 2019£1,380,000 | 4 Bed House46, Southdown Road, Harpenden, AL5 1PG46, Southdown Road, Harpenden, AL5 1PG
• Sold Nov 2017£965,000 | 4 Bed House31, Southdown Road, Harpenden, AL5 1PF31, Southdown Road, Harpenden, AL5 1PF
• Sold Oct 2017£1,250,000 | 5 Bed House16, Spenser Road, Harpenden, AL5 5NN16, Spenser Road, Harpenden, AL5 5NN
• Sold Apr 2017£1,440,000 | 5 Bed House6, Topstreet Way, Harpenden, AL5 5TT6, Topstreet Way, Harpenden, AL5 5TT
• Sold Sep 2015£1,325,000 | 5 Bed House14, Rowan Way, Harpenden, AL5 5TJ14, Rowan Way, Harpenden, AL5 5TJ
• Sold Nov 2014£912,000 | 5 Bed House33A, Crabtree Lane, Harpenden, AL5 5NT33A, Crabtree Lane, Harpenden, AL5 5NT
• Sold Dec 2013£960,000 | 5 Bed House47, Southdown Road, Harpenden, AL5 1PQ47, Southdown Road, Harpenden, AL5 1PQ
• Sold Jul 2009£770,000 | 5 Bed House44, Crabtree Lane, Harpenden, AL5 5NS44, Crabtree Lane, Harpenden, AL5 5NS

Southdown Road, Harpenden, AL5 has a total of 119 addresses. According to our analysis of all the public data, 44, Southdown Road, Harpenden is the 21st largest and the 7th most expensive property on the street.

When compared to the postcode district it is £601k more expensive than the average property in AL5.

• St Dominic Catholic Primary School

  200 m away
• Harpenden Academy

  700 m away
• Crabtree Infants' School

  900 m away

• St George's School

  1.4 km away
• Sir John Lawes School

  1.4 km away
• Katherine Warington School

  1.9 km away

• Harpenden

  |

  500 m away
• St Albans City

  |

  6.8 km away
• St Albans Abbey

  |

  7.3 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.