According to data from HM Land Registry, 80, Northwick Avenue, Harrow sits on a plot of 449 m².

We have plot size data on 20 out of 21 other houses in the postcode and 80, Northwick Avenue, Harrow sits on the 12th largest plot.

80, Northwick Avenue, Harrow has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 18 Apr 2023.

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 HM Land Registry, 80, Northwick Avenue, Harrow was last sold on 17th April 2014 for £535,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since April 2014, the market for similar properties has risen by 25.9%.

According to the Land Registry and our network of Estate Agents, there have been 54 sales of properties similar to 80, Northwick Avenue, Harrow within a radius of 540 metres since 2011.

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 Mar 2025£770,000 | 4 Bed House6, Mayfield Avenue, Harrow, HA3 8EU6, Mayfield Avenue, Harrow, HA3 8EU
• 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 Sep 2024£662,075 | 4 Bed House46, Churchill Avenue, Harrow, HA3 0AY46, Churchill Avenue, Harrow, HA3 0AY
• Sold Mar 2024£590,000 | 4 Bed House90, Northwick Avenue, Harrow, HA3 0AT90, Northwick Avenue, Harrow, HA3 0AT
• Sold Nov 2023£660,000 | 4 Bed House24, Greystone Gardens, Harrow, HA3 0EG24, Greystone Gardens, Harrow, HA3 0EG
• 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 Nov 2020£755,000 | 4 Bed House57, Northwick Avenue, Harrow, HA3 0AU57, Northwick Avenue, Harrow, HA3 0AU
• Sold Feb 2019£575,000 | 4 Bed House39, Churchill Avenue, Harrow, HA3 0AX39, Churchill Avenue, Harrow, HA3 0AX
• Sold Feb 2017£676,000 | 4 Bed House16, Hawthorne Avenue, Harrow, HA3 8AG16, Hawthorne Avenue, Harrow, HA3 8AG
• Sold Aug 2016£665,500 | 4 Bed House41, Churchill Avenue, Harrow, HA3 0AX41, Churchill Avenue, Harrow, HA3 0AX
• Sold Mar 2016£550,000 | 4 Bed House38, Churchill Avenue, Harrow, HA3 0AY38, Churchill Avenue, Harrow, HA3 0AY
• Sold Mar 2016£590,000 | 4 Bed House102, Northwick Avenue, Harrow, HA3 0AT102, Northwick Avenue, Harrow, HA3 0AT
• Sold Feb 2015£580,000 | 4 Bed House29, Elmwood Avenue, Harrow, HA3 8AJ29, Elmwood Avenue, Harrow, HA3 8AJ
• Sold Oct 2013£520,000 | 4 Bed House18, Churchill Avenue, Harrow, HA3 0AY18, Churchill Avenue, Harrow, HA3 0AY
• Sold Sep 2011£385,000 | 4 Bed House19, Rushout Avenue, Harrow, HA3 0AS19, Rushout Avenue, Harrow, HA3 0AS

Northwick Avenue, Harrow, HA3 has a total of 162 addresses. According to our analysis of all the public data, 80, Northwick Avenue, Harrow is the 56th largest and the 48th most expensive property on the street.

When compared to the postcode district it is £151k more expensive than the average property in HA3.

• 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

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