HM Land Registry records the plot of land for 21, Milton Road, Harpenden as measuring 1,411 m².

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

21, Milton Road, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 20 Jul 2017.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 21, Milton Road, Harpenden completed on 20th February 2018 at £1,732,000 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 28.7% over the period since February 2018.

• Sold Feb 2018£1,732,000

Since 2013 40 properties similar to 21, Milton Road, Harpenden have sold within a radius of 590 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 25th September 2025, was 27, Dalkeith Road, Harpenden, AL5 5PP, a freehold house which sold for £1,752,500.

Read more about house prices in AL5.

• Sold Sep 2025£1,752,500 | 5 Bed House27, Dalkeith Road, Harpenden, AL5 5PP27, Dalkeith Road, Harpenden, AL5 5PP
• Sold Jul 2025£2,100,000 | 5 Bed House4, Browning Road, Harpenden, AL5 4TR4, Browning Road, Harpenden, AL5 4TR
• Sold Jul 2024£2,145,746 | 5 Bed House24, Browning Road, Harpenden, AL5 4TR24, Browning Road, Harpenden, AL5 4TR
• Sold Sep 2023£1,513,000 | 5 Bed House10, Dalkeith Road, Harpenden, AL5 5PW10, Dalkeith Road, Harpenden, AL5 5PW
• Sold May 2023£1,675,000 | 5 Bed House15, Arden Grove, Harpenden, AL5 4SJ15, Arden Grove, Harpenden, AL5 4SJ
• Sold Apr 2023£1,850,000 | 5 Bed House42, Dalkeith Road, Harpenden, AL5 5PW42, Dalkeith Road, Harpenden, AL5 5PW
• Sold Feb 2023£1,700,000 | 5 Bed House12, Gilpin Green, Harpenden, AL5 5NR12, Gilpin Green, Harpenden, AL5 5NR
• Sold Nov 2022£2,100,000 | 5 Bed House9, Grasmere Avenue, Harpenden, AL5 5PT9, Grasmere Avenue, Harpenden, AL5 5PT
• Sold Nov 2022£1,850,000 | 5 Bed House12, Grasmere Avenue, Harpenden, AL5 5PS12, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Oct 2022£1,975,000 | 5 Bed House24, Grasmere Avenue, Harpenden, AL5 5PS24, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Jan 2022£2,025,000 | 5 Bed House26, Stewart Road, Harpenden, AL5 4QB26, Stewart Road, Harpenden, AL5 4QB
• Sold Aug 2021£1,725,000 | 5 Bed House3, Devonshire Road, Harpenden, AL5 4TJ3, Devonshire Road, Harpenden, AL5 4TJ
• Sold Jun 2021£1,715,000 | 5 Bed House4, Eliot Place, Harpenden, AL5 5PE4, Eliot Place, Harpenden, AL5 5PE
• Sold Feb 2021£1,740,000 | 5 Bed House73, Dalkeith Road, Harpenden, AL5 5PP73, Dalkeith Road, Harpenden, AL5 5PP
• Sold May 2020£1,575,000 | 5 Bed House15, Browning Road, Harpenden, AL5 4TS15, Browning Road, Harpenden, AL5 4TS
• Sold Jan 2019£1,500,000 | 5 Bed House6, Browning Road, Harpenden, AL5 4TR6, Browning Road, Harpenden, AL5 4TR
• Sold Apr 2018£2,000,000 | 5 Bed House15, Stewart Road, Harpenden, AL5 4QE15, Stewart Road, Harpenden, AL5 4QE
• Sold May 2016£1,525,000 | 5 Bed House28, Crabtree Lane, Harpenden, AL5 5NU28, Crabtree Lane, Harpenden, AL5 5NU
• Sold Dec 2015£1,600,000 | 5 Bed House24, Bowers Way, Harpenden, AL5 4EW24, Bowers Way, Harpenden, AL5 4EW
• Sold Jan 2013£1,230,000 | 5 Bed House19, Milton Road, Harpenden, AL5 5LA19, Milton Road, Harpenden, AL5 5LA

Of the 261 addresses on Milton Road, Harpenden, AL5, 21, Milton Road, Harpenden comes out as the 12th largest and the 4th most expensive in our analysis of the public data.

It is also £1.127m more expensive than the average property across the AL5 district.

• Harpenden Academy

  300 m away
• St Dominic Catholic Primary School

  500 m away
• Crabtree Infants' School

  600 m away

• St George's School

  800 m away
• Sir John Lawes School

  800 m away
• Katherine Warington School

  1.4 km away

• Harpenden

  |

  200 m away
• Luton Airport Parkway

  |

  7.1 km away
• St Albans City

  |

  7.4 km away

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