Our Data Sources
3, Sidmouth Avenue, Isleworth has a single entry in the Land Registry from October 2021 and a single entry in the EPC database dated May 2021.
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
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 3, Sidmouth Avenue, Isleworth, we estimate a market value of £558,173 and a rental value of £2,333 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £494,382 and £2,067 per month respectively.
Plot Size
HM Land Registry records the plot of land for 3, Sidmouth Avenue, Isleworth as measuring 238 m2.
That makes it the 31st largest plot in the postcode, where all 35 other houses have recorded plot data.
Energy Efficiency
3, Sidmouth Avenue, Isleworth has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 May 2021.
The property is connected to mains gas and has mostly double glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 3, Sidmouth Avenue, Isleworth completed on 26th October 2021 at £530,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 3.5% over the period since October 2021.
- Sold Oct 2021£530,000
Similar Properties Sold Nearby
Over the past 2 years 80 properties similar to 3, Sidmouth Avenue, Isleworth have sold within a radius of 410 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 19th December 2025, was 17, Sidmouth Avenue, Isleworth, TW7 4DW, a freehold house which sold for £550,000.
Read more about house prices in TW7.
- Sold Dec 2025£550,000 | 3 Bed House17, Sidmouth Avenue, Isleworth, TW7 4DW17, Sidmouth Avenue, Isleworth, TW7 4DW
- Sold Jul 2025£515,000 | 3 Bed House4, Crawford Close, Isleworth, TW7 4DP4, Crawford Close, Isleworth, TW7 4DP
- Sold Jun 2024£575,000 | 3 Bed House5, Sidmouth Avenue, Isleworth, TW7 4DW5, Sidmouth Avenue, Isleworth, TW7 4DW
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 113 addresses on Sidmouth Avenue, Isleworth, TW7, 3, Sidmouth Avenue, Isleworth comes out as the 68th largest and the 74th most expensive in our analysis of the public data.
It is also £25k more expensive than the average property across the TW7 district.
More reading links
Schools Nearby
- Spring Grove Primary School500 m away
- Isleworth Town Primary School800 m away
- The Smallberry Green Primary School900 m away
- Isleworth and Syon School for Boys800 m away
- Gumley House RC Convent School, FCJ900 m away
- The Green School for Girls1.3 km away
More reading links
Public Transport Nearby
- Isleworth|300 m away
- Osterley|1.1 km away
- Hounslow East|1.1 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
