HM Land Registry records the plot of land for 23A, Douglas Road, Harpenden as measuring 562 m².

That makes it the 2nd largest plot in the postcode, where all 4 other houses have recorded plot data.

The most recent sale of 23A, Douglas Road, Harpenden completed on 23rd February 2007 at £680,000 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 68.5% over the period since February 2007.

• Sold Feb 2007£680,000

Since 2012 103 properties similar to 23A, 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 27th April 2026, was 25, Moreton End Lane, Harpenden, AL5 2EY, a freehold house which sold for £1,160,000.

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 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 Feb 2025£1,325,000 | 4 Bed House3, Townsend Close, Harpenden, AL5 2RF3, Townsend Close, Harpenden, AL5 2RF
• 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 Aug 2023£1,515,000 | 4 Bed House8, Barns Dene, Harpenden, AL5 2HQ8, Barns Dene, Harpenden, AL5 2HQ
• Sold Feb 2023£1,425,000 | 4 Bed House9, Barns Dene, Harpenden, AL5 2HH9, Barns Dene, Harpenden, AL5 2HH
• Sold Jan 2023£1,300,000 | 4 Bed House38, Townsend Lane, Harpenden, AL5 2QS38, Townsend Lane, Harpenden, AL5 2QS
• 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 Jan 2021£1,220,000 | 4 Bed House16, Barns Dene, Harpenden, AL5 2HQ16, Barns Dene, Harpenden, AL5 2HQ
• Sold Dec 2020£868,000 | 4 Bed House17B, Douglas Road, Harpenden, AL5 2EN17B, Douglas Road, Harpenden, AL5 2EN
• Sold Sep 2020£1,100,000 | 4 Bed House6A, Moreton End Lane, Harpenden, AL5 2EX6A, Moreton End Lane, Harpenden, AL5 2EX
• Sold Aug 2015£950,000 | 4 Bed House35, Claygate Avenue, Harpenden, AL5 2HE35, Claygate Avenue, Harpenden, AL5 2HE
• Sold May 2015£920,000 | 4 Bed House26, Barns Dene, Harpenden, AL5 2HQ26, Barns Dene, Harpenden, AL5 2HQ
• Sold Apr 2012£900,000 | 4 Bed House23, Douglas Road, Harpenden, AL5 2EP23, Douglas Road, Harpenden, AL5 2EP

Of the 66 addresses on Douglas Road, Harpenden, AL5, 23A, Douglas Road, Harpenden comes out as the 27th largest and the 28th most expensive in our analysis of the public data.

It is also £302k more expensive than the average property across the AL5 district.

• St Nicholas CofE VA Primary School

  500 m away
• Roundwood Primary School

  500 m away
• Harpenden Academy

  800 m away

• Roundwood Park School

  600 m away
• St George's School

  800 m away
• Sir John Lawes School

  1.3 km away

• Harpenden

  |

  1.0 km away
• Luton Airport Parkway

  |

  6.3 km away
• Luton

  |

  7.8 km away

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