Our Data Sources
23, Penwerris Avenue, Isleworth has a single entry in the Land Registry from June 2021 and a single entry in the EPC database dated March 2021.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 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 23, Penwerris Avenue, Isleworth, we estimate a market value of £824,071 and a rental value of £2,927 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £729,892 and £2,593 per month respectively.
Plot Size
HM Land Registry records the plot of land for 23, Penwerris Avenue, Isleworth as measuring 380 m2.
That makes it the 15th largest plot in the postcode, where all 19 other houses have recorded plot data.
Energy Efficiency
23, Penwerris Avenue, Isleworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 31 Mar 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 23, Penwerris Avenue, Isleworth completed on 9th June 2021 at £745,000 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 dropped by 9.4% over the period since June 2021.
- Sold Jun 2021£745,000
Similar Properties Sold Nearby
Over the past 2 years 69 properties similar to 23, Penwerris Avenue, Isleworth have sold within a radius of 650 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 29th August 2025, was 11, Cranmore Avenue, Isleworth, TW7 4QW, a freehold house which sold for £876,000.
Read more about house prices in TW7.
- Sold Aug 2025£876,000 | 3 Bed House11, Cranmore Avenue, Isleworth, TW7 4QW11, Cranmore Avenue, Isleworth, TW7 4QW
- Sold Jul 2025£822,500 | 4 Bed House106, Bassett Gardens, Isleworth, TW7 4QY106, Bassett Gardens, Isleworth, TW7 4QY
- Sold May 2024£760,000 | 3 Bed House110, Bassett Gardens, Isleworth, TW7 4QY110, Bassett Gardens, Isleworth, TW7 4QY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 40 addresses on Penwerris Avenue, Isleworth, TW7, 23, Penwerris Avenue, Isleworth comes out as the 29th largest and the 26th most expensive in our analysis of the public data.
It is also £278k more expensive than the average property across the TW7 district.
More reading links
Schools Nearby
- Alexandra Primary School900 m away
- Spring Grove Primary School1.0 km away
- Heston Primary School1.1 km away
- Isleworth and Syon School for Boys900 m away
- Lampton Academy1.0 km away
- Heston Community School1.0 km away
More reading links
Public Transport Nearby
- Osterley|300 m away
- Hounslow East|900 m away
- Hounslow Central|1.4 km away
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
