Apartment 10, Northumberland House Lower Square, Isleworth, TW7 6RL is a leasehold flat built before 1900. The property offers approximately 710 square feet of living space and is situated on the 1st floor. In this location, apartments of similar size usually have two bedrooms.

The estimated current market value of the property is £508,723 , which equates to approximately £716 per square foot. It was last sold on 12 Oct 2007 for £335,000. Since then, the value has increased by £173,723, representing a 51.9% increase, or approximately 2.9% per year.

The current estimated value of £508,723 is:

  • 17.9% lower than the average property price on Lower Square
  • 13.0% lower than the average in the TW7 6RL postcode area
  • and 9.8% lower than the average price for Isleworth as a whole

At the most recent EPC inspection on 19 May 2025, the property was recorded as owner-occupied.

View sold house prices in TW7 6RL

Building approximate location

About Property

Type
Flat
Built
before 1900
Interior Size
710 sq ft
Tenure
Leasehold
Floor level
1st floor
Price (estimate)
£508,723
Price Per sq ft (estimate)
£716
Bedroom Count (estimate)
2 bedrooms

EPC Summary

Apartment 10, Northumberland House Lower Square, Isleworth, Hounslow, Greater London, TW7 6RL has an Energy Performance Certificate (EPC) rating of D, based on the latest assessment carried out on 19 May 2025.

This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are single glazed.

Heating Type
Boiler and radiators, mains gas
Good
Hot Water
From main system
Good
Roof
Pitched, 200 mm loft insulation
Good
Walls
Solid brick, as built, no insulation (assumed)
Very Poor
Windows
Single glazed
Very Poor
Lighting
Low energy lighting in all fixed outlets
Very Good

Compared to TW7 6RL

8 th / 19
Price Rank
13% lower than average
6 th / 15
Size Rank
12% bigger than average
13 th / 15
Price Per Sq FT Rank
22% lower than average

Compared to other properties in TW7 6RL , this flat's estimated value ranks 8th out of 19. Based on price per square foot, it ranks 13th out of 15 properties. This indicates a lower price per square foot than most, suggesting good value for the space offered. In terms of size, this home ranks 6th out of 15 properties in its postcode area.

Sale History

Today
£508,723
streetscan.co.uk estimate
+52 %
12 Oct 2007
£335,000
Leasehold

Area Insights

Similar Properties Sold Nearby

rooms: 3
size: 721 sq ft
sale price: £490,000
sale date: 28 Oct 2024
rooms: 3
size: 732 sq ft
sale price: £499,950
sale date: 28 Jun 2021
rooms: 2
size: 614 sq ft
sale price: £399,950
sale date: 21 Sep 2015
rooms: 2
size: 700 sq ft
sale price: £229,950
sale date: 21 Jul 2003

Data Sources

The property at Apartment 10, Northumberland House Lower Square, Isleworth, Hounslow, Greater London, TW7 6RL appears once in the Land Registry records, with the transaction recorded on 12 Oct 2007. It also has a single Energy Performance Certificate (EPC) from 19 May 2025. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.