Our Data Sources
73, Sidmouth Avenue, Isleworth has 21 entries in the Land Registry , most recently in August 2010 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 1 out of 5 and is considered of low 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 73, Sidmouth Avenue, Isleworth, we estimate a market value of £533,573 and a rental value of £2,438 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £472,593 and £2,160 per month respectively.
Plot Size
HM Land Registry records the plot of land for 73, Sidmouth Avenue, Isleworth as measuring 124 m2.
That makes it the 2nd largest plot in the postcode, where all 4 other houses have recorded plot data.
Energy Efficiency
73, Sidmouth Avenue, Isleworth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 25 May 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 73, Sidmouth Avenue, Isleworth completed on 25th August 2010 at £295,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have risen by 73.3% over the period since August 2010.
- Sold Aug 2010£295,000
- Sold Aug 2005£275,000
Similar Properties Sold Nearby
Over the past 2 years 37 properties similar to 73, Sidmouth Avenue, Isleworth have sold within a radius of 420 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 24th October 2025, was 14, Thornbury Road, Isleworth, TW7 4HG, a freehold house which sold for £420,000.
Read more about house prices in TW7.
- Sold Oct 2025£420,000 | 3 Bed House14, Thornbury Road, Isleworth, TW7 4HG14, Thornbury Road, Isleworth, TW7 4HG
- Sold Oct 2024£475,000 | 3 Bed House2, Fairways, Isleworth, TW7 4NS2, Fairways, Isleworth, TW7 4NS
- Sold Apr 2021£475,000 | 3 Bed House5, Clifton Road, Isleworth, TW7 4HL5, Clifton Road, Isleworth, TW7 4HL
•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, 73, Sidmouth Avenue, Isleworth comes out as the 36th largest and the 77th most expensive in our analysis of the public data.
It is also £2k more expensive than the average property across the TW7 district.
More reading links
Schools Nearby
- Spring Grove Primary School500 m away
- Isleworth Town Primary School900 m away
- The Smallberry Green Primary School1.0 km away
- Isleworth and Syon School for Boys700 m away
- Gumley House RC Convent School, FCJ1.0 km away
- Lift Kingsley1.2 km away
More reading links
Public Transport Nearby
- Isleworth|300 m away
- Osterley|1.0 km away
- Hounslow East|1.1 km away
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












