Our Data Sources
31, Northwick Avenue, Harrow has a single entry in the Land Registry from October 2016 and a single entry in the EPC database dated December 2015.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 31, Northwick Avenue, Harrow would be worth £1,157,537, with a potential rental value of £4,246 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,025,247, with a rental value of £3,761 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
31, Northwick Avenue, Harrow occupies a 808 m2 plot as recorded by HM Land Registry.
Of the 27 other houses in this postcode, 25 have recorded plot sizes, and this one ranks as the largest.
Energy Efficiency
31, Northwick Avenue, Harrow has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 17 Dec 2015.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and underfloor heating (mains gas).
Sold Prices
31, Northwick Avenue, Harrow last changed hands on 14th October 2016, selling for £1,210,000. 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 risen by 1.3% since October 2016.
- Sold Oct 2016£1,210,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 6 sales of comparable properties within 570 metres of 31, Northwick Avenue, Harrow since 2007.
Most recently, 14, Gerard Road, Harrow, HA1 2ND, a freehold house, sold at £1,380,000 on the 31st January 2025.
Read more about house prices in HA3.
- Sold Jan 2025£1,380,000 | 5 Bed House14, Gerard Road, Harrow, HA1 2ND14, Gerard Road, Harrow, HA1 2ND
- Sold Jan 2022£925,000 | 5 Bed House3, Mayfield Avenue, Harrow, HA3 8EX3, Mayfield Avenue, Harrow, HA3 8EX
- Sold Sep 2020£1,150,000 | 5 Bed House5, Northwick Avenue, Harrow, HA3 0AA5, Northwick Avenue, Harrow, HA3 0AA
- Sold Dec 2013£715,000 | 5 Bed House4, Gerard Road, Harrow, HA1 2ND4, Gerard Road, Harrow, HA1 2ND
- Sold Feb 2012£594,000 | 5 Bed House90, Draycott Avenue, Harrow, HA3 0BY90, Draycott Avenue, Harrow, HA3 0BY
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £713,340, ranging from £383,713 to £1,154,742.
- 29 Northwick Avenue
4 Bed House | 9 m | Est. Value: £710,562
- 35 Northwick Avenue
4 Bed House | 19 m | Est. Value: £685,717
- 37 Northwick Avenue
4 Bed House | 31 m | Est. Value: £638,081
- 50 Northwick Avenue
5 Bed House | 35 m | Est. Value: £1,154,742
- 48A Northwick Avenue
3 Bed Flat | 36 m | Est. Value: £544,174
Location Comparison
Our analysis of the public data ranks 31, Northwick Avenue, Harrow as the 5th largest and the 4th most expensive of the 162 addresses on Northwick Avenue, Harrow, HA3.
Against the HA3 postcode district average, it is £591k more expensive than the typical property.
More reading links
Schools Nearby
- Saint Jerome Church of England Bilingual School1.1 km away
- Elmgrove Primary School & Nursery1.1 km away
- Mount Stewart Infant School1.3 km away
- Harrow High School500 m away
- St Gregory's Catholic Science College1.2 km away
- Claremont High School1.9 km away
More reading links
Public Transport Nearby
- Northwick Park|100 m away
- Kenton|300 m away
- Harrow-on-the-Hill|1.1 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












