According to data from HM Land Registry, 10, Northwick Avenue, Harrow sits on a plot of 372 m².

We have plot size data on 33 out of 33 other houses in the postcode and 10, Northwick Avenue, Harrow sits on the 25th largest plot.

10, Northwick Avenue, Harrow has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 02 Sep 2022.

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 the Land Registry and our network of Estate Agents, there have been 73 sales of properties similar to 10, Northwick Avenue, Harrow within a radius of 590 metres since 2007.

The most recent example is 4, Hawthorne Avenue, Harrow, HA3 8AG, a freehold house which sold for £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 Jul 2025£700,000 | 4 Bed House7, Ashburnham Gardens, Harrow, HA1 2JH7, Ashburnham Gardens, Harrow, HA1 2JH
• Sold Jun 2025£680,000 | 4 Bed House32, Hawthorne Avenue, Harrow, HA3 8AG32, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Feb 2025£670,000 | 4 Bed House23, Elmwood Avenue, Harrow, HA3 8AJ23, Elmwood Avenue, Harrow, HA3 8AJ
• Sold Oct 2024£655,000 | 4 Bed House51, Northwick Avenue, Harrow, HA3 0AA51, Northwick Avenue, Harrow, HA3 0AA
• Sold Apr 2024£635,000 | 4 Bed House56, Manor Road, Harrow, HA1 2PD56, Manor Road, Harrow, HA1 2PD
• Sold Sep 2023£665,000 | 4 Bed House1, Flambard Road, Harrow, HA1 2NB1, Flambard Road, Harrow, HA1 2NB
• Sold Jul 2023£750,000 | 4 Bed House14, Flambard Road, Harrow, HA1 2NA14, Flambard Road, Harrow, HA1 2NA
• Sold Jul 2023£742,000 | 4 Bed House58, Gayton Road, Harrow, HA1 2LS58, Gayton Road, Harrow, HA1 2LS
• Sold Oct 2022£815,000 | 4 Bed House11, Hawthorne Avenue, Harrow, HA3 8AG11, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Jun 2022£710,000 | 4 Bed House106, Northwick Avenue, Harrow, HA3 0AT106, Northwick Avenue, Harrow, HA3 0AT
• Sold Apr 2021£680,000 | 4 Bed House26, Northwick Avenue, Harrow, HA3 0AB26, Northwick Avenue, Harrow, HA3 0AB
• Sold Jan 2021£600,000 | 4 Bed House3, Hawthorne Avenue, Harrow, HA3 8AG3, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Oct 2018£565,000 | 4 Bed House45, Grange Road, Harrow, HA1 2PR45, Grange Road, Harrow, HA1 2PR
• Sold Sep 2017£561,000 | 4 Bed House16, Northwick Avenue, Harrow, HA3 0AB16, Northwick Avenue, Harrow, HA3 0AB
• Sold Feb 2017£676,000 | 4 Bed House16, Hawthorne Avenue, Harrow, HA3 8AG16, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Jan 2016£685,000 | 4 Bed House27, Hawthorne Avenue, Harrow, HA3 8AG27, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Oct 2012£385,000 | 4 Bed House6, Woodway Crescent, Harrow, HA1 2NQ6, Woodway Crescent, Harrow, HA1 2NQ
• Sold Feb 2008£375,000 | 4 Bed House22, Northwick Avenue, Harrow, HA3 0AB22, Northwick Avenue, Harrow, HA3 0AB
• Sold Jan 2007£355,000 | 4 Bed House32, Northwick Avenue, Harrow, HA3 0AB32, Northwick Avenue, Harrow, HA3 0AB

Northwick Avenue, Harrow, HA3 has a total of 162 addresses. According to our analysis of all the public data, 10, Northwick Avenue, Harrow is the 60th largest and the 50th most expensive property on the street.

When compared to the postcode district it is £128k more expensive than the average property in HA3.

• Saint Jerome Church of England Bilingual School

  1.0 km away
• Elmgrove Primary School & Nursery

  1.1 km away
• Harris Primary Academy South Kenton

  1.3 km away

• Harrow High School

  500 m away
• St Gregory's Catholic Science College

  1.2 km away
• Wembley High Technology College

  1.9 km away

• Northwick Park

  |

  200 m away
• Kenton

  |

  300 m away
• Harrow-on-the-Hill

  |

  1.0 km away

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