Our Data Sources
Flat 4, 40, Osterley Avenue, Isleworth has no records in the the Land Registry and a single entry in the EPC database dated February 2021.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If Flat 4, 40, Osterley Avenue, Isleworth is in very good condition we estimate a sale value of £314,025 and a rental value of £1,464 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £278,136 and a rental value of £1,297 per month.
Energy Efficiency
Flat 4, 40, Osterley Avenue, Isleworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 09 Feb 2021.
The property is not connected to mains gas and has high performance glazing. It is heated using Room heaters, electric.
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 110 sales of properties similar to Flat 4, 40, Osterley Avenue, Isleworth within a radius of 630 metres over the last 2 years.
The most recent example is 12, Chamberlain Gardens, Hounslow, TW3 4NF, a leasehold flat which sold for £260,000 on the 9th October 2025.
Read more about house prices in TW7.
- Sold Oct 2025£260,000 | 2 Bed Flat12, Chamberlain Gardens, Hounslow, TW3 4NF12, Chamberlain Gardens, Hounslow, TW3 4NF
- Sold Jul 2025£310,000 | 2 Bed Flat14, Chamberlain Gardens, Hounslow, TW3 4NF14, Chamberlain Gardens, Hounslow, TW3 4NF
- Sold Jun 2024£310,000 | 2 Bed Flat10 Osterley Court, Great West Road, Isleworth, TW7 4PX10 Osterley Court, Great West Road, Isleworth, TW7 4PX
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Osterley Avenue, Isleworth, TW7 has a total of 48 addresses. According to our analysis of all the public data, Flat 4, 40, Osterley Avenue, Isleworth is the 44th largest and the 44th most expensive property on the street.
When compared to the postcode district it is £208k less expensive than the average property in TW7.
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Schools Nearby
- Spring Grove Primary School900 m away
- Alexandra Primary School1.2 km away
- Heston Primary School1.5 km away
- Isleworth and Syon School for Boys600 m away
- Lampton Academy1.4 km away
- Lift Kingsley1.4 km away
More reading links
Public Transport Nearby
- Osterley|200 m away
- Hounslow East|1.1 km away
- Isleworth|1.2 km away
Available Internet Speeds
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.












