HM Land Registry records the plot of land for 11, Douglas Road, Harpenden as measuring 604 m².

That makes it the 7th largest plot in the postcode, where all 14 other houses have recorded plot data.

11, Douglas Road, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 05 Apr 2012.

The property is not connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 11, Douglas Road, Harpenden completed on 26th October 2012 at £980,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 32.2% over the period since October 2012.

• Sold Oct 2012£980,000

Since 2011 98 properties similar to 11, Douglas Road, Harpenden have sold within a radius of 670 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 3rd September 2025, was 4, Townsend Lane, Harpenden, AL5 2QE, a freehold house which sold for £1,610,000.

Read more about house prices in AL5.

• Sold Sep 2025£1,610,000 | 4 Bed House4, Townsend Lane, Harpenden, AL5 2QE4, Townsend Lane, Harpenden, AL5 2QE
• Sold Jul 2025£1,375,000 | 4 Bed House16, Hitherfield Lane, Harpenden, AL5 4JD16, Hitherfield Lane, Harpenden, AL5 4JD
• Sold Jul 2025£1,305,000 | 4 Bed House12, Bloomfield Road, Harpenden, AL5 4DB12, Bloomfield Road, Harpenden, AL5 4DB
• Sold Jul 2025£1,595,000 | 4 Bed House14, Roundwood Park, Harpenden, AL5 3AB14, Roundwood Park, Harpenden, AL5 3AB
• Sold Jul 2025£1,495,000 | 4 Bed House37, Hillside Road, Harpenden, AL5 4BS37, Hillside Road, Harpenden, AL5 4BS
• Sold May 2024£1,260,000 | 4 Bed House6, Barns Dene, Harpenden, AL5 2HQ6, Barns Dene, Harpenden, AL5 2HQ
• Sold Jan 2024£1,500,000 | 4 Bed House11B, Douglas Road, Harpenden, AL5 2EN11B, Douglas Road, Harpenden, AL5 2EN
• Sold Aug 2023£1,515,000 | 4 Bed House8, Barns Dene, Harpenden, AL5 2HQ8, Barns Dene, Harpenden, AL5 2HQ
• Sold Mar 2023£1,507,500 | 4 Bed House21, Moreton End Lane, Harpenden, AL5 2EY21, Moreton End Lane, Harpenden, AL5 2EY
• Sold Feb 2023£1,425,000 | 4 Bed House9, Barns Dene, Harpenden, AL5 2HH9, Barns Dene, Harpenden, AL5 2HH
• Sold Dec 2022£1,720,000 | 5 Bed House5, Ambrose Lane, Harpenden, AL5 4AU5, Ambrose Lane, Harpenden, AL5 4AU
• Sold Dec 2022£1,515,000 | 4 Bed House39, Moreton End Lane, Harpenden, AL5 2HA39, Moreton End Lane, Harpenden, AL5 2HA
• Sold Jun 2022£1,285,000 | 4 Bed House6, Townsend Lane, Harpenden, AL5 2QE6, Townsend Lane, Harpenden, AL5 2QE
• Sold Apr 2022£1,465,000 | 4 Bed House14, Barns Dene, Harpenden, AL5 2HQ14, Barns Dene, Harpenden, AL5 2HQ
• Sold Dec 2021£1,232,000 | 5 Bed House1 Lavendon, Aplins Close, Harpenden, AL5 2RJ1 Lavendon, Aplins Close, Harpenden, AL5 2RJ
• Sold Oct 2021£1,290,000 | 5 Bed House25, Salisbury Avenue, Harpenden, AL5 2QF25, Salisbury Avenue, Harpenden, AL5 2QF
• Sold Jan 2021£1,220,000 | 4 Bed House16, Barns Dene, Harpenden, AL5 2HQ16, Barns Dene, Harpenden, AL5 2HQ
• Sold Nov 2019£1,350,000 | 4 Bed House11, Townsend Road, Harpenden, AL5 4BQ11, Townsend Road, Harpenden, AL5 4BQ
• Sold Apr 2019£1,100,000 | 4 Bed House11, Moreton Place, Harpenden, AL5 2UF11, Moreton Place, Harpenden, AL5 2UF
• Sold Apr 2011£795,000 | 4 Bed House18A, Douglas Road, Harpenden, AL5 2EW18A, Douglas Road, Harpenden, AL5 2EW

Of the 66 addresses on Douglas Road, Harpenden, AL5, 11, Douglas Road, Harpenden comes out as the 23rd largest and the 23rd most expensive in our analysis of the public data.

It is also £537k more expensive than the average property across the AL5 district.

• 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

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