According to data from HM Land Registry, 17B, Douglas Road, Harpenden sits on a plot of 331 m².

We have plot size data on 14 out of 14 other houses in the postcode and 17B, Douglas Road, Harpenden sits on the 14th largest plot.

17B, Douglas Road, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 23 Jun 2020.

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

According to HM Land Registry, 17B, Douglas Road, Harpenden was last sold on 16th December 2020 for £868,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since December 2020, the market for similar properties has dropped by 1.7%.

• Sold Dec 2020£868,000
• Sold Feb 2007£535,000

According to the Land Registry and our network of Estate Agents, there have been 91 sales of properties similar to 17B, Douglas Road, Harpenden within a radius of 660 metres since 2015.

The most recent example is 25, Moreton End Lane, Harpenden, AL5 2EY, a freehold house which sold for £1,160,000 on the 27th April 2026.

Read more about house prices in AL5.

• Sold Apr 2026£1,160,000 | 4 Bed House25, Moreton End Lane, Harpenden, AL5 2EY25, Moreton End Lane, Harpenden, AL5 2EY
• Sold Dec 2025£1,130,000 | 4 Bed House1, Byron Road, Harpenden, AL5 4AD1, Byron Road, Harpenden, AL5 4AD
• Sold Oct 2025£1,200,000 | 4 Bed House46, Bloomfield Road, Harpenden, AL5 4DB46, Bloomfield Road, Harpenden, AL5 4DB
• Sold Sep 2025£1,175,000 | 4 Bed House27, Barns Dene, Harpenden, AL5 2HH27, Barns Dene, Harpenden, AL5 2HH
• Sold Jul 2025£1,375,000 | 4 Bed House16, Hitherfield Lane, Harpenden, AL5 4JD16, Hitherfield Lane, Harpenden, AL5 4JD
• Sold Jan 2025£1,150,000 | 4 Bed House16, Broadfields, Harpenden, AL5 2HJ16, Broadfields, Harpenden, AL5 2HJ
• Sold Jan 2024£1,500,000 | 4 Bed House11B, Douglas Road, Harpenden, AL5 2EN11B, Douglas Road, Harpenden, AL5 2EN
• Sold Nov 2023£850,500 | 4 Bed House35, Ambrose Lane, Harpenden, AL5 4BU35, Ambrose Lane, Harpenden, AL5 4BU
• Sold Aug 2023£975,000 | 4 Bed House1, Roundwood Gardens, Harpenden, AL5 3AJ1, Roundwood Gardens, Harpenden, AL5 3AJ
• Sold Aug 2023£1,515,000 | 4 Bed House8, Barns Dene, Harpenden, AL5 2HQ8, Barns Dene, Harpenden, AL5 2HQ
• Sold Jan 2023£1,300,000 | 4 Bed House38, Townsend Lane, Harpenden, AL5 2QS38, Townsend Lane, Harpenden, AL5 2QS
• Sold Oct 2022£1,840,000 | 4 Bed House10, Pondwick Road, Harpenden, AL5 2HG10, Pondwick Road, Harpenden, AL5 2HG
• Sold Jun 2022£1,285,000 | 4 Bed House6, Townsend Lane, Harpenden, AL5 2QE6, Townsend Lane, Harpenden, AL5 2QE
• Sold Sep 2021£1,200,000 | 4 Bed House45, Luton Road, Harpenden, AL5 2UB45, Luton Road, Harpenden, AL5 2UB
• Sold Jun 2021£1,150,000 | 4 Bed House21, Douglas Road, Harpenden, AL5 2EP21, Douglas Road, Harpenden, AL5 2EP
• Sold Feb 2021£1,065,000 | 4 Bed House6, Broadfields, Harpenden, AL5 2HJ6, Broadfields, Harpenden, AL5 2HJ
• Sold Sep 2020£1,100,000 | 4 Bed House6A, Moreton End Lane, Harpenden, AL5 2EX6A, Moreton End Lane, Harpenden, AL5 2EX
• Sold Nov 2019£800,000 | 4 Bed House51, Moreton End Lane, Harpenden, AL5 2HA51, Moreton End Lane, Harpenden, AL5 2HA
• Sold Sep 2019£900,000 | 4 Bed House11, Claygate Avenue, Harpenden, AL5 2HE11, Claygate Avenue, Harpenden, AL5 2HE
• Sold Aug 2015£950,000 | 4 Bed House35, Claygate Avenue, Harpenden, AL5 2HE35, Claygate Avenue, Harpenden, AL5 2HE

Douglas Road, Harpenden, AL5 has a total of 66 addresses. According to our analysis of all the public data, 17B, Douglas Road, Harpenden is the 29th largest and the 27th most expensive property on the street.

When compared to the postcode district it is £334k more expensive than the average property in AL5.

• St Nicholas CofE VA Primary School

  500 m away
• Roundwood Primary School

  600 m away
• Harpenden Academy

  800 m away

• St George's School

  700 m away
• Roundwood Park School

  700 m away
• Sir John Lawes School

  1.2 km away

• Harpenden

  |

  1.0 km away
• Luton Airport Parkway

  |

  6.2 km away
• Luton

  |

  7.7 km away

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