90, Northwick Avenue, Harrow occupies a 398 m² plot as recorded by HM Land Registry.

Of the 21 other houses in this postcode, 20 have recorded plot sizes, and this one ranks as the 18th largest.

90, Northwick Avenue, Harrow has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 24 May 2023.

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

90, Northwick Avenue, Harrow last changed hands on 6th March 2024, selling for £590,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has dropped by 6.8% since March 2024.

Land Registry records and our Estate Agent network show 40 sales of comparable properties within 540 metres of 90, Northwick Avenue, Harrow since 2007.

Most recently, 4, Hawthorne Avenue, Harrow, HA3 8AG, a freehold house, sold at £727,500 on the 18th August 2025.

Read more about house prices in HA3.

• Sold Aug 2025£727,500 | 4 Bed House4, Hawthorne Avenue, Harrow, HA3 8AG4, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Jun 2025£680,000 | 4 Bed House32, Hawthorne Avenue, Harrow, HA3 8AG32, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Oct 2024£655,000 | 4 Bed House51, Northwick Avenue, Harrow, HA3 0AA51, Northwick Avenue, Harrow, HA3 0AA
• Sold Sep 2024£662,075 | 4 Bed House46, Churchill Avenue, Harrow, HA3 0AY46, Churchill Avenue, Harrow, HA3 0AY
• Sold Dec 2023£1,235,000 | 3 Bed House70, Draycott Avenue, Harrow, HA3 0BU70, Draycott Avenue, Harrow, HA3 0BU
• Sold Sep 2023£665,000 | 4 Bed House1, Flambard Road, Harrow, HA1 2NB1, Flambard Road, Harrow, HA1 2NB
• Sold Jun 2022£710,000 | 4 Bed House106, Northwick Avenue, Harrow, HA3 0AT106, Northwick Avenue, Harrow, HA3 0AT
• Sold Jun 2021£604,700 | 3 Bed House16, Lulworth Avenue, Wembley, HA9 8TP16, Lulworth Avenue, Wembley, HA9 8TP
• Sold Jan 2021£600,000 | 4 Bed House3, Hawthorne Avenue, Harrow, HA3 8AG3, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Feb 2019£575,000 | 4 Bed House39, Churchill Avenue, Harrow, HA3 0AX39, Churchill Avenue, Harrow, HA3 0AX
• Sold Sep 2018£660,000 | 4 Bed House10, Draycott Close, Harrow, HA3 0BP10, Draycott Close, Harrow, HA3 0BP
• Sold Sep 2017£561,000 | 4 Bed House16, Northwick Avenue, Harrow, HA3 0AB16, Northwick Avenue, Harrow, HA3 0AB
• Sold Sep 2017£580,000 | 4 Bed House12, Draycott Close, Harrow, HA3 0BP12, Draycott Close, Harrow, HA3 0BP
• Sold May 2017£645,000 | 4 Bed House8, Mayfield Avenue, Harrow, HA3 8EU8, Mayfield Avenue, Harrow, HA3 8EU
• Sold May 2017£640,000 | 4 Bed House47, Northwick Avenue, Harrow, HA3 0AA47, Northwick Avenue, Harrow, HA3 0AA
• Sold Aug 2016£665,500 | 4 Bed House41, Churchill Avenue, Harrow, HA3 0AX41, Churchill Avenue, Harrow, HA3 0AX
• Sold Mar 2016£590,000 | 4 Bed House102, Northwick Avenue, Harrow, HA3 0AT102, Northwick Avenue, Harrow, HA3 0AT
• Sold Apr 2014£535,000 | 4 Bed House80, Northwick Avenue, Harrow, HA3 0AT80, Northwick Avenue, Harrow, HA3 0AT
• Sold Sep 2011£385,000 | 4 Bed House19, Rushout Avenue, Harrow, HA3 0AS19, Rushout Avenue, Harrow, HA3 0AS
• Sold Jan 2007£355,000 | 4 Bed House32, Northwick Avenue, Harrow, HA3 0AB32, Northwick Avenue, Harrow, HA3 0AB

Our analysis of the public data ranks 90, Northwick Avenue, Harrow as the 69th largest and the 65th most expensive of the 162 addresses on Northwick Avenue, Harrow, HA3.

Against the HA3 postcode district average, it is £103k more expensive than the typical property.

• Mount Stewart Infant School

  900 m away
• Mount Stewart Junior School

  1.0 km away
• Harris Primary Academy South Kenton

  1.1 km away

• Harrow High School

  900 m away
• St Gregory's Catholic Science College

  900 m away
• Claremont High School

  1.6 km away

• Northwick Park

  |

  200 m away
• Kenton

  |

  400 m away

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