HM Land Registry records the plot of land for 40, Mayfield Avenue, Harrow as measuring 419 m².

That makes it the 4th largest plot in the postcode, where all 23 other houses have recorded plot data.

40, Mayfield Avenue, Harrow has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 26 Nov 2013.

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

Since 2011 118 properties similar to 40, Mayfield Avenue, Harrow have sold within a radius of 570 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 19th December 2025, was 17, Becmead Avenue, Harrow, HA3 8HD, a freehold house which sold for £780,000.

Read more about house prices in HA3.

• Sold Dec 2025£780,000 | 4 Bed House17, Becmead Avenue, Harrow, HA3 8HD17, Becmead Avenue, Harrow, HA3 8HD
• Sold Aug 2025£638,000 | 4 Bed House50, Brampton Grove, Harrow, HA3 8LF50, Brampton Grove, Harrow, HA3 8LF
• Sold Aug 2025£727,500 | 4 Bed House4, Hawthorne Avenue, Harrow, HA3 8AG4, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Mar 2025£770,000 | 4 Bed House6, Mayfield Avenue, Harrow, HA3 8EU6, Mayfield Avenue, Harrow, HA3 8EU
• Sold Mar 2025£650,000 | 4 Bed House61, Kenton Gardens, Harrow, HA3 8DE61, Kenton Gardens, Harrow, HA3 8DE
• Sold Feb 2025£670,000 | 4 Bed House23, Elmwood Avenue, Harrow, HA3 8AJ23, Elmwood Avenue, Harrow, HA3 8AJ
• Sold Nov 2024£832,500 | 4 Bed House7, Becmead Avenue, Harrow, HA3 8HD7, Becmead Avenue, Harrow, HA3 8HD
• Sold Sep 2024£630,000 | 4 Bed House53, Becmead Avenue, Harrow, HA3 8HD53, Becmead Avenue, Harrow, HA3 8HD
• Sold Apr 2024£625,000 | 4 Bed House54, Carlton Avenue, Harrow, HA3 8AY54, Carlton Avenue, Harrow, HA3 8AY
• Sold Aug 2023£610,000 | 4 Bed House33, Carlton Avenue, Harrow, HA3 8AX33, Carlton Avenue, Harrow, HA3 8AX
• Sold Oct 2022£815,000 | 4 Bed House11, Hawthorne Avenue, Harrow, HA3 8AG11, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Sep 2022£875,000 | 4 Bed House7, Hawthorne Avenue, Harrow, HA3 8AG7, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Mar 2022£675,000 | 4 Bed House4, Willowcourt Avenue, Harrow, HA3 8ES4, Willowcourt Avenue, Harrow, HA3 8ES
• Sold Aug 2020£635,000 | 4 Bed House49, Becmead Avenue, Harrow, HA3 8HD49, Becmead Avenue, Harrow, HA3 8HD
• Sold Jan 2016£685,000 | 4 Bed House27, Hawthorne Avenue, Harrow, HA3 8AG27, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Mar 2014£500,000 | 4 Bed House5, Becmead Avenue, Harrow, HA3 8HD5, Becmead Avenue, Harrow, HA3 8HD
• Sold Dec 2013£495,000 | 4 Bed House46, Carlton Avenue, Harrow, HA3 8AY46, Carlton Avenue, Harrow, HA3 8AY
• Sold Apr 2013£485,000 | 4 Bed House20, Carlton Avenue, Harrow, HA3 8AY20, Carlton Avenue, Harrow, HA3 8AY
• Sold Apr 2013£426,000 | 4 Bed House18, Carlton Avenue, Harrow, HA3 8AY18, Carlton Avenue, Harrow, HA3 8AY
• Sold Dec 2011£435,000 | 4 Bed House36, Mayfield Avenue, Harrow, HA3 8EU36, Mayfield Avenue, Harrow, HA3 8EU

Of the 49 addresses on Mayfield Avenue, Harrow, HA3, 40, Mayfield Avenue, Harrow comes out as the 24th largest and the 21st most expensive in our analysis of the public data.

It is also £200k more expensive than the average property across the HA3 district.

• Elmgrove Primary School & Nursery

  700 m away
• Saint Jerome Church of England Bilingual School

  1.0 km away
• Mount Stewart Infant School

  1.2 km away

• St Gregory's Catholic Science College

  800 m away
• Harrow High School

  900 m away
• Claremont High School

  1.6 km away

• Kenton

  |

  300 m away
• Northwick Park

  |

  600 m away
• Harrow-on-the-Hill

  |

  1.4 km away

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