According to data from HM Land Registry, 24, Northwick Avenue, Harrow sits on a plot of 415 m².

We have plot size data on 33 out of 33 other houses in the postcode and 24, Northwick Avenue, Harrow sits on the 10th largest plot.

24, Northwick Avenue, Harrow has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 16 May 2026.

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 69 sales of properties similar to 24, Northwick Avenue, Harrow within a radius of 590 metres since 2011.

The most recent example is 19, Northwick Avenue, Harrow, HA3 0AA, a freehold house which sold for £800,000 on the 30th January 2026.

Read more about house prices in HA3.

• Sold Jan 2026£800,000 | 4 Bed House19, Northwick Avenue, Harrow, HA3 0AA19, Northwick Avenue, Harrow, HA3 0AA
• Sold Feb 2025£670,000 | 4 Bed House23, Elmwood Avenue, Harrow, HA3 8AJ23, Elmwood Avenue, Harrow, HA3 8AJ
• Sold Mar 2024£725,000 | 4 Bed House32, Gerard Road, Harrow, HA1 2NE32, Gerard Road, Harrow, HA1 2NE
• Sold Nov 2023£625,000 | 4 Bed House3, Bonnersfield Close, Harrow, HA1 2LQ3, Bonnersfield Close, Harrow, HA1 2LQ
• Sold Jul 2023£750,000 | 4 Bed House14, Flambard Road, Harrow, HA1 2NA14, Flambard Road, Harrow, HA1 2NA
• 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 Aug 2022£700,000 | 4 Bed House88, Kenton Road, Harrow, HA3 8AE88, Kenton Road, Harrow, HA3 8AE
• Sold Feb 2022£656,000 | 4 Bed House1, Northwick Avenue, Harrow, HA3 0AA1, Northwick Avenue, Harrow, HA3 0AA
• Sold Aug 2021£853,500 | 4 Bed House23, Hawthorne Avenue, Harrow, HA3 8AG23, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Apr 2021£680,000 | 4 Bed House26, Northwick Avenue, Harrow, HA3 0AB26, Northwick Avenue, Harrow, HA3 0AB
• Sold Nov 2020£755,000 | 4 Bed House57, Northwick Avenue, Harrow, HA3 0AU57, Northwick Avenue, Harrow, HA3 0AU
• Sold Sep 2017£620,000 | 4 Bed House33, Hawthorne Avenue, Harrow, HA3 8AG33, Hawthorne Avenue, Harrow, HA3 8AG
• Sold May 2017£790,000 | 4 Bed House20A, Northwick Avenue, Harrow, HA3 0AB20A, Northwick Avenue, Harrow, HA3 0AB
• Sold Feb 2017£676,000 | 4 Bed House16, Hawthorne Avenue, Harrow, HA3 8AG16, 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 Jan 2016£685,000 | 4 Bed House27, Hawthorne Avenue, Harrow, HA3 8AG27, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Apr 2013£420,000 | 4 Bed House8, Woodway Crescent, Harrow, HA1 2NQ8, Woodway Crescent, Harrow, HA1 2NQ
• Sold Feb 2011£420,000 | 4 Bed House44, Northwick Avenue, Harrow, HA3 0AB44, Northwick Avenue, Harrow, HA3 0AB

Northwick Avenue, Harrow, HA3 has a total of 162 addresses. According to our analysis of all the public data, 24, Northwick Avenue, Harrow is the 39th largest and the 39th most expensive property on the street.

When compared to the postcode district it is £192k 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.