343a, Chiswick High Road, Hounslow, London, W4 4HS
About 343a
343a is a mid-terrace house in Hounslow, London, London (W4 4HS). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (February 2018) shows a C (score 71). When first surveyed in April 2010 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Very Good and main heating went from Average to Good. At 41 m² this is the 2nd smallest of 24 units on EPC record in the building, where floor areas span 39–93 m². The building's EPC ratings span E to B across 24 units on file.
At 41 m² it's 19.6% smaller than the typical home in the postcode (51 m² median across 32 EPCs).
Everything you need to know about 343a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
343a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Single glazing replaced with double or better glazing
More low energy lighting installed
Glazing upgraded to newer, more efficient type
Wall insulation improved
More low energy lighting installed
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
343a has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
343a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£366,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in W4 4HS: £310,000 (2024–2008).
Versus other Chiswick High Road homes
Floor Area for 343a lags the street by a wide margin.
EPC Rating
71 (C)
Street avg 71 (C)
Floor Area
41 m²
Street avg 52 m²
CO₂ Emissions
1.5 t/year
Street avg 1.9 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 343a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
Every report £14.99, one-off · 30-day money-back guarantee · emailed in minutes
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Chiswick Road — bus stop.
Closest school
0.5 km
Belmont Primary School. 49 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
57.3dB
Night-time· 23:00 – 07:00
48.1dB