20, Mayfield Avenue, Harrow occupies a 411 m² plot as recorded by HM Land Registry.

All 23 other houses in this postcode have recorded plot sizes, and this one ranks as the 13th largest.

20, Mayfield Avenue, Harrow has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 29 Sep 2017.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Land Registry records and our Estate Agent network show 86 sales of comparable properties within 580 metres of 20, Mayfield Avenue, Harrow since 2008.

Most recently, 17, Becmead Avenue, Harrow, HA3 8HD, a freehold house, sold at £780,000 on the 19th December 2025.

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 Apr 2025£495,000 | 4 Bed House248, Kenton Road, Harrow, HA3 8BY248, Kenton Road, Harrow, HA3 8BY
• Sold Mar 2025£550,000 | 4 Bed House230, Kenton Road, Harrow, HA3 8BY230, Kenton Road, Harrow, HA3 8BY
• Sold Sep 2024£630,000 | 4 Bed House53, Becmead Avenue, Harrow, HA3 8HD53, Becmead Avenue, Harrow, HA3 8HD
• Sold Jul 2024£825,000 | 5 Bed House23, Mayfield Avenue, Harrow, HA3 8EX23, Mayfield Avenue, Harrow, HA3 8EX
• Sold Mar 2023£762,500 | 4 Bed House44, Mayfield Avenue, Harrow, HA3 8EU44, Mayfield Avenue, Harrow, HA3 8EU
• Sold Sep 2022£875,000 | 4 Bed House7, Hawthorne Avenue, Harrow, HA3 8AG7, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Aug 2022£860,000 | 5 Bed House14, Becmead Avenue, Harrow, HA3 8EY14, Becmead Avenue, Harrow, HA3 8EY
• Sold Aug 2022£686,555 | 4 Bed House71, Kenton Gardens, Harrow, HA3 8DE71, Kenton Gardens, Harrow, HA3 8DE
• Sold Jul 2022£775,000 | 5 Bed House16, Upton Gardens, Harrow, HA3 0DL16, Upton Gardens, Harrow, HA3 0DL
• Sold Jun 2022£700,000 | 5 Bed House32, Carlton Avenue, Harrow, HA3 8AY32, Carlton Avenue, Harrow, HA3 8AY
• Sold Apr 2022£800,000 | 4 Bed House33, Becmead Avenue, Harrow, HA3 8HD33, Becmead Avenue, Harrow, HA3 8HD
• Sold Aug 2021£853,500 | 4 Bed House23, Hawthorne Avenue, Harrow, HA3 8AG23, Hawthorne Avenue, Harrow, HA3 8AG
• Sold May 2021£842,000 | 5 Bed House3, Briar Road, Harrow, HA3 0DP3, Briar Road, Harrow, HA3 0DP
• Sold Aug 2020£635,000 | 4 Bed House49, Becmead Avenue, Harrow, HA3 8HD49, Becmead Avenue, Harrow, HA3 8HD
• Sold Sep 2017£620,000 | 4 Bed House33, Hawthorne Avenue, Harrow, HA3 8AG33, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Jun 2016£658,000 | 4 Bed House46, Woodway Crescent, Harrow, HA1 2NQ46, Woodway Crescent, Harrow, HA1 2NQ
• Sold Mar 2016£820,000 | 4 Bed House21, Hawthorne Avenue, Harrow, HA3 8AG21, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Dec 2012£548,000 | 5 Bed House31, Becmead Avenue, Harrow, HA3 8HD31, Becmead Avenue, Harrow, HA3 8HD
• Sold Apr 2008£490,000 | 5 Bed House16, Mayfield Avenue, Harrow, HA3 8EU16, Mayfield Avenue, Harrow, HA3 8EU

Our analysis of the public data ranks 20, Mayfield Avenue, Harrow as the 10th largest and the 9th most expensive of the 49 addresses on Mayfield Avenue, Harrow, HA3.

Against the HA3 postcode district average, it is £300k more expensive than the typical property.

• 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

Environment Agency data suggests this area has a Very Low risk of flooding.