Flat 4, 40 Addison Avenue, Hounslow, TW3 4AP
About Flat 4
Flat 4 is a semi-detached house in Hounslow (TW3 4AP). It has a recorded floor area of 95 m² (around 1023 sq ft) and construction records dating it to 1900-1929. The latest certificate (January 2024) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2013. Between certificates, window efficiency went from Average to Good; while roof efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 84), a 2-band jump.
Untraded for 30 years, with the last transfer in July 1996. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £536,000 sits 570% above the 1996 sale of £80,000. On a £-per-square-foot basis, the last sale (£78/sq ft) was about 77.2% below the postcode norm.
Know exactly what you're buying at Flat 4
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Planning history
Flat 4 has no planning applications on record.
Notable planning nearby
18applications of note in the surrounding area
We flagged 1 thing worth checking at Flat 4
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
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Sales history & valuation
Flat 4's modelled value sits at over four times its earliest registered sale price (1996).
£536,000
Modelled from EPC, postcode comparables.
£80,000
Recorded with HM Land Registry.
Sales timeline
1 July 1996Most recent
£80,000
Median price across the last 5 sales in TW3 4AP: £530,000 (2025–2021).
Nearby sales in TW3 4AP
Everything we know about Flat 4, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
Versus other Addison Avenue homes
Price per m² for Flat 4 lags the street by a wide margin.
Price per m²
£842
Street avg £4,939
Floor Area
95 m²
Street avg 98 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.3 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
16/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Spring Grove Crescent — bus stop.
Closest school
0.3 km
Alexandra Primary School. 48 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
54.0dB
Night-time· 23:00 – 07:00
44.6dB