According to data from HM Land Registry, 18, Mayfield Close, Harpenden sits on a plot of 448 m².

We have plot size data on 19 out of 19 other houses in the postcode and 18, Mayfield Close, Harpenden sits on the 14th largest plot.

18, Mayfield Close, Harpenden has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 17 Mar 2026.

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, 18, Mayfield Close, Harpenden was last sold on 30th November 2007 for £655,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since November 2007, the market for similar properties has risen by 97.5%.

• Sold Nov 2007£655,000
• Sold Dec 2003£475,000

According to the Land Registry and our network of Estate Agents, there have been 165 sales of properties similar to 18, Mayfield Close, Harpenden within a radius of 900 metres since 2019.

The most recent example is 26, Roundwood Lane, Harpenden, AL5 3BZ, a freehold house which sold for £1,530,000 on the 29th January 2026.

Read more about house prices in AL5.

• Sold Jan 2026£1,530,000 | 5 Bed House26, Roundwood Lane, Harpenden, AL5 3BZ26, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Dec 2025£1,150,000 | 4 Bed House3, How Field, Harpenden, AL5 3AU3, How Field, Harpenden, AL5 3AU
• Sold Oct 2025£1,290,000 | 4 Bed House12, Lambourn Gardens, Harpenden, AL5 4DQ12, Lambourn Gardens, Harpenden, AL5 4DQ
• Sold Oct 2025£1,200,000 | 5 Bed House7, Carpenders Close, Harpenden, AL5 3HN7, Carpenders Close, Harpenden, AL5 3HN
• Sold Oct 2025£1,060,000 | 5 Bed House245, Luton Road, Harpenden, AL5 3DE245, Luton Road, Harpenden, AL5 3DE
• Sold Jul 2025£1,300,000 | 5 Bed House52, Roundwood Lane, Harpenden, AL5 3EP52, Roundwood Lane, Harpenden, AL5 3EP
• Sold Jan 2025£1,170,000 | 5 Bed House23, Wood End Hill, Harpenden, AL5 3EZ23, Wood End Hill, Harpenden, AL5 3EZ
• Sold Jan 2025£1,300,000 | 5 Bed House8, How Field, Harpenden, AL5 3AU8, How Field, Harpenden, AL5 3AU
• Sold Dec 2024£1,540,000 | 5 Bed House22, Roundwood Lane, Harpenden, AL5 3BZ22, Roundwood Lane, Harpenden, AL5 3BZ
• Sold Jul 2024£1,200,000 | 4 Bed House49, Tuffnells Way, Harpenden, AL5 3HA49, Tuffnells Way, Harpenden, AL5 3HA
• Sold Jul 2024£1,425,000 | 5 Bed House10, Roundwood Gardens, Harpenden, AL5 3AJ10, Roundwood Gardens, Harpenden, AL5 3AJ
• Sold May 2023£1,010,000 | 4 Bed House37, Ridgewood Drive, Harpenden, AL5 3LJ37, Ridgewood Drive, Harpenden, AL5 3LJ
• Sold May 2023£1,380,000 | 4 Bed House7, Wood End Road, Harpenden, AL5 3EE7, Wood End Road, Harpenden, AL5 3EE
• Sold Jul 2022£1,425,000 | 4 Bed House38, Roundwood Lane, Harpenden, AL5 3BX38, Roundwood Lane, Harpenden, AL5 3BX
• Sold Mar 2022£1,325,000 | 4 Bed House58, Roundwood Lane, Harpenden, AL5 3EP58, Roundwood Lane, Harpenden, AL5 3EP
• Sold Jan 2022£1,185,000 | 4 Bed House54, Falconers Field, Harpenden, AL5 3ET54, Falconers Field, Harpenden, AL5 3ET
• Sold May 2021£1,305,000 | 5 Bed House56, Roundwood Lane, Harpenden, AL5 3EP56, Roundwood Lane, Harpenden, AL5 3EP
• Sold Feb 2021£1,150,000 | 5 Bed House13, Mayfield Close, Harpenden, AL5 3LG13, Mayfield Close, Harpenden, AL5 3LG
• Sold Nov 2019£882,000 | 4 Bed House293, Luton Road, Harpenden, AL5 3LW293, Luton Road, Harpenden, AL5 3LW
• Sold Jul 2019£1,240,000 | 5 Bed House17, Wood End Hill, Harpenden, AL5 3EZ17, Wood End Hill, Harpenden, AL5 3EZ

Mayfield Close, Harpenden, AL5 has a total of 19 addresses. According to our analysis of all the public data, 18, Mayfield Close, Harpenden is the 6th largest and the 6th most expensive property on the street.

When compared to the postcode district it is £326k more expensive than the average property in AL5.

• Wood End School

  500 m away
• Roundwood Primary School

  700 m away
• The Lea Primary School and Nursery

  1.4 km away

• Roundwood Park School

  700 m away
• St George's School

  1.4 km away
• Sir John Lawes School

  1.9 km away

• Harpenden

  |

  2.0 km away
• Luton Airport Parkway

  |

  5.4 km away
• Luton

  |

  6.8 km away

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