According to data from HM Land Registry, 36, Southdown Road, Harpenden sits on a plot of 918 m².

We have plot size data on 11 out of 12 other houses in the postcode and 36, Southdown Road, Harpenden sits on the 3rd largest plot.

36, Southdown Road, Harpenden has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 07 Feb 2025.

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

According to HM Land Registry, 36, Southdown Road, Harpenden was last sold on 4th January 2013 for £1,225,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since January 2013, the market for similar properties has risen by 32.6%.

• Sold Jan 2013£1,225,000
• Sold Mar 1999£365,000

According to the Land Registry and our network of Estate Agents, there have been 33 sales of properties similar to 36, Southdown Road, Harpenden within a radius of 690 metres since 2014.

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 Aug 2025£1,530,565 | 5 Bed House1B, Crabtree Lane, Harpenden, AL5 5TA1B, Crabtree Lane, Harpenden, AL5 5TA
• 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 2025£1,825,000 | 5 Bed House33, Southdown Road, Harpenden, AL5 1PF33, Southdown Road, Harpenden, AL5 1PF
• Sold Oct 2023£1,465,000 | 5 Bed House43, Southdown Road, Harpenden, AL5 1PG43, Southdown Road, Harpenden, AL5 1PG
• Sold Apr 2023£1,685,000 | 5 Bed House2, Chaucer Close, Harpenden, AL5 5JP2, Chaucer Close, Harpenden, AL5 5JP
• Sold Feb 2023£1,700,000 | 5 Bed House12, Gilpin Green, Harpenden, AL5 5NR12, Gilpin Green, Harpenden, AL5 5NR
• Sold Sep 2021£1,450,000 | 5 Bed House40, Topstreet Way, Harpenden, AL5 5TT40, Topstreet Way, Harpenden, AL5 5TT
• Sold Jul 2020£1,455,000 | 5 Bed House4, Topstreet Way, Harpenden, AL5 5TT4, Topstreet Way, Harpenden, AL5 5TT
• Sold Sep 2019£1,380,000 | 4 Bed House46, Southdown Road, Harpenden, AL5 1PG46, Southdown Road, Harpenden, AL5 1PG
• Sold Jun 2019£1,600,000 | 5 Bed House45, Southdown Road, Harpenden, AL5 1PG45, Southdown Road, Harpenden, AL5 1PG
• Sold Jun 2018£1,000,000 | 5 Bed House26, Spenser Road, Harpenden, AL5 5NN26, Spenser Road, Harpenden, AL5 5NN
• Sold Jul 2017£1,480,000 | 5 Bed House6, Eliot Place, Harpenden, AL5 5PE6, Eliot Place, Harpenden, AL5 5PE
• Sold Jun 2017£1,314,550 | 5 Bed House23, Cowper Road, Harpenden, AL5 5NF23, Cowper Road, Harpenden, AL5 5NF
• Sold Jun 2017£1,600,000 | 5 Bed House7, Eliot Place, Harpenden, AL5 5PE7, Eliot Place, Harpenden, AL5 5PE
• Sold May 2016£1,525,000 | 5 Bed House28, Crabtree Lane, Harpenden, AL5 5NU28, Crabtree Lane, Harpenden, AL5 5NU
• Sold Sep 2015£1,325,000 | 5 Bed House14, Rowan Way, Harpenden, AL5 5TJ14, Rowan Way, Harpenden, AL5 5TJ
• Sold Sep 2014£825,000 | 5 Bed House8, Fairmead Avenue, Harpenden, AL5 5UE8, Fairmead Avenue, Harpenden, AL5 5UE

Southdown Road, Harpenden, AL5 has a total of 119 addresses. According to our analysis of all the public data, 36, Southdown Road, Harpenden is the 8th largest and the most expensive property on the street.

When compared to the postcode district it is £793k 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.