489a, London Road, Isleworth, TW7 4BX
About 489a
489a is an end-of-terrace house in Isleworth (TW7 4BX). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (May 2021) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since October 2015. Between certificates, roof efficiency went from Very Poor to Good and window efficiency went from Very Poor to Average; while hot-water efficiency dropped from Good to Average and main heating dropped from Good to Average. The recommended improvements would push it to C (score 78). Main heating runs on electricity. At 76 m² this is the 6th smallest of 11 units on EPC record in the building, where floor areas span 32–89 m². The building's EPC ratings span G to C across 11 units on file.
Untraded for 20 years, with the last transfer in February 2006. Across 2004–2006, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £286,000 sits 84.5% above the 2006 sale of £155,000.
Know exactly what you're buying at 489a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Single glazing replaced with double or better glazing
Loft insulation installed or upgraded to 250mm+
Planning history
489a has no planning applications on record.
Notable planning nearby
8applications of note in the surrounding area
We flagged 2 things worth checking at 489a
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
- Larger development activity nearby
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Sales history & valuation
489a changed hands twice within eighteen months — unusual for the area.
£286,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.3% per year over 1 year.
£155,000
Growth on file: 5.3% per year over 1 year.
Sales timeline
28 February 2006Most recent
£155,000
+6.9%over 1 year16 November 2004
£145,000
Median price across the last 4 sales in TW7 4BX: £160,250 (2024–2005).
Everything we know about 489a, 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
- Larger development activity nearby
Versus other London Road homes
On co₂ emissions, 489a runs well behind the street norm.
Price per m²
£2,039
Street avg £2,683
Floor Area
76 m²
Street avg 65 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
5.2 t/year
Street avg 4.2 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Isleworth — bus stop.
Closest school
0.3 km
West Thames College. 46 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
54.1dB
Night-time· 23:00 – 07:00
43.6dB