According to data from HM Land Registry, 9, Mayfield Close, Harpenden sits on a plot of 1,148 m².

We have plot size data on 19 out of 19 other houses in the postcode and 9, Mayfield Close, Harpenden sits on the largest plot.

9, Mayfield Close, Harpenden has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 Oct 2009.

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, 9, Mayfield Close, Harpenden was last sold on 8th January 2010 for £405,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since January 2010, the market for similar properties has risen by 95.3%.

• Sold Jan 2010£405,000

According to the Land Registry and our network of Estate Agents, there have been 131 sales of properties similar to 9, Mayfield Close, Harpenden within a radius of 860 metres since 2014.

The most recent example is 20, Ashley Gardens, Harpenden, AL5 3EY, a freehold house which sold for £800,000 on the 19th November 2025.

Read more about house prices in AL5.

• Sold Nov 2025£800,000 | 4 Bed House20, Ashley Gardens, Harpenden, AL5 3EY20, Ashley Gardens, Harpenden, AL5 3EY
• Sold Jul 2025£820,000 | 3 Bed House11, Crosspaths, Harpenden, AL5 3HB11, Crosspaths, Harpenden, AL5 3HB
• Sold Dec 2024£852,000 | 3 Bed House24, Park Mount, Harpenden, AL5 3AR24, Park Mount, Harpenden, AL5 3AR
• Sold Oct 2024£880,000 | 4 Bed House28, Ashley Gardens, Harpenden, AL5 3EY28, Ashley Gardens, Harpenden, AL5 3EY
• Sold Oct 2024£845,000 | 4 Bed House24, Ridge Avenue, Harpenden, AL5 3LT24, Ridge Avenue, Harpenden, AL5 3LT
• Sold Oct 2024£755,000 | 4 Bed House85, Roundwood Lane, Harpenden, AL5 3EX85, Roundwood Lane, Harpenden, AL5 3EX
• Sold Oct 2024£850,000 | 4 Bed House3, Park Rise Close, Harpenden, AL5 3AW3, Park Rise Close, Harpenden, AL5 3AW
• Sold Jul 2024£766,000 | 4 Bed House25, Vale Close, Harpenden, AL5 3LX25, Vale Close, Harpenden, AL5 3LX
• Sold Dec 2023£675,000 | 4 Bed House8, Ridge Avenue, Harpenden, AL5 3LU8, Ridge Avenue, Harpenden, AL5 3LU
• Sold Jun 2023£610,000 | 4 Bed House16, Wells Close, Harpenden, AL5 3LQ16, Wells Close, Harpenden, AL5 3LQ
• Sold Aug 2022£790,000 | 4 Bed House8, Vale Close, Harpenden, AL5 3LX8, Vale Close, Harpenden, AL5 3LX
• Sold Jan 2022£810,000 | 3 Bed House36, Ashley Gardens, Harpenden, AL5 3EY36, Ashley Gardens, Harpenden, AL5 3EY
• Sold Nov 2021£795,000 | 3 Bed House21, Ridge Avenue, Harpenden, AL5 3LT21, Ridge Avenue, Harpenden, AL5 3LT
• Sold Oct 2021£670,000 | 4 Bed House23, Vale Close, Harpenden, AL5 3LX23, Vale Close, Harpenden, AL5 3LX
• Sold Sep 2021£1,295,000 | 4 Bed House249, Luton Road, Harpenden, AL5 3DE249, Luton Road, Harpenden, AL5 3DE
• Sold Jun 2021£575,000 | 4 Bed House16, Vale Close, Harpenden, AL5 3LX16, Vale Close, Harpenden, AL5 3LX
• Sold Aug 2018£670,000 | 3 Bed House52, Park Rise, Harpenden, AL5 3AL52, Park Rise, Harpenden, AL5 3AL
• Sold Feb 2018£730,000 | 4 Bed House2, Wells Close, Harpenden, AL5 3LQ2, Wells Close, Harpenden, AL5 3LQ
• Sold Oct 2017£780,000 | 4 Bed House233, Luton Road, Harpenden, AL5 3DE233, Luton Road, Harpenden, AL5 3DE
• Sold Jan 2014£550,000 | 4 Bed House18, Ridge Avenue, Harpenden, AL5 3LT18, Ridge Avenue, Harpenden, AL5 3LT

Mayfield Close, Harpenden, AL5 has a total of 19 addresses. According to our analysis of all the public data, 9, Mayfield Close, Harpenden is the 17th largest and the 19th most expensive property on the street.

When compared to the postcode district it is £203k less 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.