9 Byfield Road, Isleworth, TW7 7AF
About 9 Byfield Road
9 Byfield Road is a three-bedroom end-of-terrace house in Isleworth (TW7 7AF). It has a recorded floor area of 103 m² (around 1109 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (March 2021) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in February 2010 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Poor to Average, window efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 84), a 2-band jump. Our model identifies extension potential, subject to local planning policy.
At 103 m² the property is well over the postcode median (74 m² across 14 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 1 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. Across 2010–2021, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£631/sq ft) was about 108.4% above the typical sold price in the postcode. Sold June 2021 for £699,950. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 9 Byfield Road
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
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
Outside
- Private gardenYes
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Roof insulation improved
More low energy lighting installed
Planning history
9 Byfield Road sits within a conservation area — exterior works face additional planning controls.
- Jan 2015ExtensionFullIn report
Extension: Single storey · Rear of property
Erection of single storey rear infill extension to the house
- Documents
- 10 docs on file
- Reference
- P/2014/4464
- Nov 2011Tree WorksTreesIn report
Felling of a Conifer tree within a Conservation Area
Conservation Area- Reference
- P/2011/2727
We flagged 1 thing worth checking at 9 Byfield Road
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£715,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 11 years.
£699,950
Growth on file: 6.1% per year over 11 years.
Sales timeline
22 June 2021Most recent
£699,950
+91.8%over 10 years22 July 2010
£365,000
Median price across the last 5 sales in TW7 7AF: £650,000 (2024–2020).
Nearby sales in TW7 7AF
Everything we know about 9 Byfield Road, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Byfield Road homes
On habitable rooms, 9 Byfield Road stands well clear of the street.
Price per m²
£6,796
Street avg £5,686
Floor Area
103 m²
Street avg 79 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
4.3 t/year
Street avg 3.5 t/year
Similar properties nearby
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Isleworth Library — bus stop.
Closest school
0.2 km
St Mary's Catholic Primary School, Isleworth. 43 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
52.4dB

Night-time· 23:00 – 07:00
43.5dB