Our Data Sources
Flat 4, John Day House, Isleworth has 21 entries in the Land Registry , most recently in December 2023 and a single entry in the EPC database dated June 2023.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium 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 Flat 4, John Day House, Isleworth, we estimate a market value of £700,874 and a rental value of £3,089 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £620,774 and £2,736 per month respectively.
Energy Efficiency
Flat 4, John Day House, Isleworth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 05 Jun 2023.
The property is connected to mains gas and has full secondary glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of Flat 4, John Day House, Isleworth completed on 4th December 2023 at £685,000 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 the property has sold twice.
Values of comparable properties have dropped by 41.4% over the period since December 2023.
- Sold Dec 2023£685,000
- Sold May 2000£257,950
Similar Properties Sold Nearby
Over the past 2 years 50 properties similar to Flat 4, John Day House, Isleworth have sold within a radius of 520 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 17th March 2026, was Flat 69, Lion Court, Swan Street, Isleworth, TW7 6YA, a leasehold flat which sold for £727,500.
Read more about house prices in TW7.
- Sold Mar 2026£727,500 | 3 Bed FlatFlat 69, Lion Court, Swan Street, Isleworth, TW7 6YAFlat 69, Lion Court, Swan Street, Isleworth, TW7 6YA
- Sold Jul 2025£645,000 | 3 Bed FlatFlat 22, Lion Court, Lion Wharf Road, Isleworth, TW7 6XXFlat 22, Lion Court, Lion Wharf Road, Isleworth, TW7 6XX
- Sold Mar 2023£695,000 | 3 Bed FlatFlat 84, Lion Court, Swan Street, Isleworth, TW7 6YAFlat 84, Lion Court, Swan Street, Isleworth, TW7 6YA
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 40 addresses on Lower Square, Isleworth, TW7, Flat 4, John Day House, Isleworth comes out as the 2nd largest and the 2nd most expensive in our analysis of the public data.
It is also £161k more expensive than the average property across the TW7 district.
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Schools Nearby
- The Blue School CofE Primary100 m away
- St Mary's Catholic Primary School, Isleworth300 m away
- Worple Primary School400 m away
- Gumley House RC Convent School, FCJ500 m away
- The Green School for Boys900 m away
- The Green School for Girls1.1 km away
More reading links
Public Transport Nearby
- Isleworth|1.1 km away
- Syon Lane|1.4 km away
- Richmond|1.6 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.
