Postcode district report · August 2026

TW4, Hounslow

TW4 is the 7th Hapiest of Hounslow's 9 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport.

Homes sold
74
in the 12 months to August 2026
Median price
£450,500
-0.1% on the year before
Price per m²
£5,089
median, homes with an EPC
Flats
27%
of homes sold

TW4 on the HPAI Swatch

Each tile ranks TW4 against the other postcode districts of Hounslow.

Price per m²£5,089/m² 9th of 9
Price change-0.1% 5th of 9
Sales a year74 a year 8th of 9
Sales change-3.7% 1st of 9
Energy efficiency67 EPC score 6th of 9
Carbon3.3 t CO₂ a home 6th of 9
Station nearby1.1 km 6th of 9
Yellow the best in Hounslow Green above average Blue below average Purple weakest in Hounslow

Yellow is Hapi: the more yellow, the better TW4 compares with the rest of Hounslow. These colours compare postcode districts within Hounslow; Hounslow's own Swatch compares it with areas across England and Wales.

Hounslow's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 TW8 192£453,750 +6.8%
2 TW7 275£490,000 +1.0%
3 TW14 164£445,000 +4.7%
4 W4 297£817,000 -3.3%
5 TW3 162£424,250 -0.5%
6 TW13 199£429,950 -0.0%
7 TW4 74£450,500 -0.1%
8 TW5 92£510,000 -2.9%
9 UB2 20£487,500 -8.0%

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About these figures

Price per m²
Median price per square metre of homes sold in the last 12 months (homes with an EPC).
Price change
Median price in the last 12 months against the 12 months before.
Sales a year
Open-market sales in the last 12 months. More sales means a deeper, easier market.
Sales change
Sales in the 12 months to three months ago against the year before. The newest months are left out: Land Registry registers sales late.
Energy efficiency
Average EPC energy efficiency score of homes sold (higher is more efficient).
Carbon
Average carbon emissions of homes sold, tonnes a year. Lower is better.
Station nearby
Median distance from homes sold to the nearest railway station. Closer is better.

Open-market sales from HM Land Registry Price Paid Data in the 12 months to August 2026 (homes in Hounslow only); price per m², energy and carbon from the homes sold that have an Energy Performance Certificate. Postcode districts with fewer than 20 sales a year in Hounslow aren't ranked.