Our Data Sources
15, Sidmouth Avenue, Isleworth has a single entry in the Land Registry from June 2015 and a single entry in the EPC database dated June 2015.
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
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 15, Sidmouth Avenue, Isleworth is in very good condition we estimate a sale value of £569,795 and a rental value of £2,372 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £504,676 and a rental value of £2,101 per month.
Plot Size
According to data from HM Land Registry, 15, Sidmouth Avenue, Isleworth sits on a plot of 287 m2.
We have plot size data on 35 out of 35 other houses in the postcode and 15, Sidmouth Avenue, Isleworth sits on the 20th largest plot.
Energy Efficiency
15, Sidmouth Avenue, Isleworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 30 Jun 2015.
The property is connected to mains gas and has partial double glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 15, Sidmouth Avenue, Isleworth was last sold on 5th June 2015 for £420,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
Since June 2015, the market for similar properties has risen by 21.5%.
- Sold Jun 2015£420,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 134 sales of properties similar to 15, Sidmouth Avenue, Isleworth within a radius of 430 metres over the last 2 years.
The most recent example is 17, Sidmouth Avenue, Isleworth, TW7 4DW, a freehold house which sold for £550,000 on the 19th December 2025.
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
Sidmouth Avenue, Isleworth, TW7 has a total of 113 addresses. According to our analysis of all the public data, 15, Sidmouth Avenue, Isleworth is the 61st largest and the 67th most expensive property on the street.
When compared to the postcode district it is £36k more expensive than the average property in TW7.
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
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast 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.
