Our Data Sources
12, Northumberland Gardens, Isleworth has a single entry in the Land Registry from November 2020 and a single entry in the EPC database dated January 2020.
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 12, Northumberland Gardens, Isleworth is in very good condition we estimate a sale value of £365,052 and a rental value of £1,739 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £323,332 and a rental value of £1,540 per month.
Energy Efficiency
12, Northumberland Gardens, Isleworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jan 2020.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 12, Northumberland Gardens, Isleworth was last sold on 11th November 2020 for £345,000 and was recorded as a leasehold flat.
The property has only had this single sale since 1995.
Since November 2020, the market for similar properties has dropped by 13.8%.
- Sold Nov 2020£345,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 174 sales of properties similar to 12, Northumberland Gardens, Isleworth within a radius of 570 metres over the last 2 years.
The most recent example is 41, Otterburn Gardens, Isleworth, TW7 5JQ, a leasehold flat which sold for £370,000 on the 16th October 2025.
Read more about house prices in TW7.
- Sold Oct 2025£370,000 | 2 Bed Flat41, Otterburn Gardens, Isleworth, TW7 5JQ41, Otterburn Gardens, Isleworth, TW7 5JQ
- Sold Dec 2024£396,000 | 2 Bed Flat15, Northumberland Gardens, Isleworth, TW7 5NT15, Northumberland Gardens, Isleworth, TW7 5NT
- Sold Dec 2021£350,000 | 2 Bed Flat12A, Northumberland Gardens, Isleworth, TW7 5NT12A, Northumberland Gardens, Isleworth, TW7 5NT
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Our network of Estate Agents reports 1 let within 570 metres of 12, Northumberland Gardens, Isleworth over the last 2 years.
Most recently, 40, Syon Park Gardens, Isleworth, TW7 5NB, a freehold house, was let by Jorgensen Turner in August 2023.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Location Comparison
Northumberland Gardens, Isleworth, TW7 has a total of 20 addresses. According to our analysis of all the public data, 12, Northumberland Gardens, Isleworth is the 10th largest and the 10th most expensive property on the street.
When compared to the postcode district it is £159k less expensive than the average property in TW7.
More reading links
Schools Nearby
- Marlborough Primary School400 m away
- The Smallberry Green Primary School800 m away
- Isleworth Town Primary School1.0 km away
- The Green School for Girls400 m away
- The Green School for Boys600 m away
- Bolder Academy700 m away
More reading links
Public Transport Nearby
- Syon Lane|100 m away
- Isleworth|1.1 km away
- Brentford|1.3 km away
Available Internet Speeds
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast 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.
