According to data from HM Land Registry, 20, Collens Road, Harpenden sits on a plot of 1,057 m².

We have plot size data on 11 out of 11 other houses in the postcode and 20, Collens Road, Harpenden sits on the 2nd largest plot.

20, Collens Road, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 02 Oct 2014.

The property is connected to mains gas and has high performance glazing. It is heated using a boiler and underfloor heating (mains gas).

According to HM Land Registry, 20, Collens Road, Harpenden was last sold on 2nd September 2005 for £720,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

• Sold Sep 2005£720,000

According to the Land Registry and our network of Estate Agents, there have been 35 sales of properties similar to 20, Collens Road, Harpenden within a radius of 1.4 kilometres since 2011.

The most recent example is 41, The Deerings, Harpenden, AL5 2PF, a freehold house which sold for £2,175,000 on the 17th October 2025.

Read more about house prices in AL5.

• Sold Oct 2025£2,175,000 | 5 Bed House41, The Deerings, Harpenden, AL5 2PF41, The Deerings, Harpenden, AL5 2PF
• Sold Aug 2025£1,725,000 | 5 Bed House44, The Uplands, Harpenden, AL5 2NZ44, The Uplands, Harpenden, AL5 2NZ
• Sold Jul 2025£2,500,000 | 5 Bed House9, The Uplands, Harpenden, AL5 2PG9, The Uplands, Harpenden, AL5 2PG
• Sold Jun 2025£2,950,000 | 5 Bed House22, Prospect Lane, Harpenden, AL5 2PL22, Prospect Lane, Harpenden, AL5 2PL
• Sold Mar 2025£3,250,000 | 5 Bed House34A, Oakfield Road, Harpenden, AL5 2NS34A, Oakfield Road, Harpenden, AL5 2NS
• Sold Feb 2025£2,425,000 | 5 Bed House14, High Elms, Harpenden, AL5 2JU14, High Elms, Harpenden, AL5 2JU
• Sold Nov 2024£2,282,200 | 5 Bed HouseCedar Lodge, Redbourn Lane, Harpenden, AL5 2NACedar Lodge, Redbourn Lane, Harpenden, AL5 2NA
• Sold Jul 2024£2,425,000 | 5 Bed HouseGray Corners, West Common Grove, Harpenden, AL5 2LEGray Corners, West Common Grove, Harpenden, AL5 2LE
• Sold Mar 2024£3,250,000 | 5 Bed House27, The Uplands, Harpenden, AL5 2PG27, The Uplands, Harpenden, AL5 2PG
• Sold Sep 2023£2,740,000 | 5 Bed House17, The Chowns, Harpenden, AL5 2BN17, The Chowns, Harpenden, AL5 2BN
• Sold Dec 2021£2,185,000 | 5 Bed House1, The Chowns, Harpenden, AL5 2BN1, The Chowns, Harpenden, AL5 2BN
• Sold Dec 2021£2,725,000 | 5 Bed House1, Garden Close, Harpenden, AL5 2EG1, Garden Close, Harpenden, AL5 2EG
• Sold Nov 2021£2,700,000 | 5 Bed HouseWoodlands, East Common, Harpenden, AL5 1DGWoodlands, East Common, Harpenden, AL5 1DG
• Sold Jun 2021£2,375,000 | 5 Bed House5, Oakhurst Avenue, Harpenden, AL5 2NB5, Oakhurst Avenue, Harpenden, AL5 2NB
• Sold Feb 2020£2,085,000 | 5 Bed HouseTwin Oaks, Redbourn Lane, Harpenden, AL5 2NATwin Oaks, Redbourn Lane, Harpenden, AL5 2NA
• Sold Oct 2019£1,700,000 | 5 Bed House4, Burywick, Harpenden, AL5 2AE4, Burywick, Harpenden, AL5 2AE
• Sold Oct 2017£1,585,000 | 5 Bed House46, Oakfield Road, Harpenden, AL5 2NS46, Oakfield Road, Harpenden, AL5 2NS
• Sold Sep 2017£2,100,000 | 5 Bed House18, The Uplands, Harpenden, AL5 2PQ18, The Uplands, Harpenden, AL5 2PQ
• Sold Oct 2015£1,965,000 | 5 Bed House37, Barlings Road, Harpenden, AL5 2AW37, Barlings Road, Harpenden, AL5 2AW
• Sold Aug 2011£1,900,000 | 5 Bed House39, Barlings Road, Harpenden, AL5 2AW39, Barlings Road, Harpenden, AL5 2AW

Collens Road, Harpenden, AL5 has a total of 11 addresses. According to our analysis of all the public data, 20, Collens Road, Harpenden is the largest and the most expensive property on the street.

When compared to the postcode district it is £1.591m more expensive than the average property in AL5.

• The Grove Junior School

  1.7 km away
• The Grove Infant and Nursery School

  1.7 km away
• St Dominic Catholic Primary School

  1.7 km away

• Townsend Church of England School

  2.6 km away
• St George's School

  2.9 km away
• Sir John Lawes School

  2.9 km away

• Harpenden

  |

  2.0 km away
• St Albans City

  |

  5.4 km away
• St Albans Abbey

  |

  5.8 km away

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