20, Onslow Avenue
20, Onslow Avenue
Description & Estimates







Public records show 20, Onslow Avenue, Richmond to be a period freehold house with 2,023 ft2 of internal area, sitting on a 144 m2 plot.
In this area, houses of this size normally have 5 bedrooms with a garden.
20, Onslow Avenue, Richmond has an estimated sale value of £2,512,818 and an estimated rental value of £6,685 per month, assuming reasonable condition and based on the information available.
Onslow Avenue, Richmond, TW10 lies in the borough of Richmond upon Thames, within the TW10 postal district.
Our Data Sources
20, Onslow Avenue, Richmond has 41 entries in the Land Registry , most recently in November 2022 and a single entry in the EPC database dated May 2022.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 20, Onslow Avenue, Richmond would be worth £2,638,459, with a potential rental value of £7,020 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £2,336,921, with a rental value of £6,218 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Recent Market Change
The estimated sale value of 20, Onslow Avenue, Richmond has climbed by £25,600 (1.0%) over the last year. During the same period, its estimated monthly rental value has risen by £514 (7.7%). The property's estimated gross yield is currently 3.2%.
Plot Size
20, Onslow Avenue, Richmond occupies a 144 m2 plot as recorded by HM Land Registry.
All 13 other houses in this postcode have recorded plot sizes, and this one ranks as the 11th largest.
Energy Efficiency
20, Onslow Avenue, Richmond has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 19 May 2022.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
20, Onslow Avenue, Richmond last changed hands on 22nd November 2022, selling for £2,300,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 4 times since 1995.
The market for similar properties has dropped by 8.0% since November 2022.
- Sold Nov 2022£2,300,000
- Sold Nov 2013£1,795,000
- Sold Oct 2006£1,225,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 340 metres of 20, Onslow Avenue, Richmond across the last 2 years.
Most recently, 18, Onslow Avenue, Richmond, TW10 6QB, a freehold house, sold at £2,787,500 on the 10th September 2025.
Read more about house prices in TW10.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 20, Onslow Avenue, Richmond as the 8th largest and the 8th most expensive of the 60 addresses on Onslow Avenue, Richmond, TW10.
Against the TW10 postcode district average, it is £1.38m more expensive than the typical property.
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Schools Nearby
- 500mThe Vineyard School
- 500mSt Elizabeth's Catholic Primary School
- 700mMarshgate Primary School
- 800mChrist's Church of England Comprehensive Secondary School
- 1.7kmOrleans Park School
- 2.3kmGrey Court School
More reading links
Public Transport Nearby
Richmond (London) station is the nearest stop to 20, Onslow Avenue, Richmond at 600 metres away.
- 600mRichmond (London)
- 600mRichmond
- 1.2kmNorth Sheen
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.

