3 Sidmouth Avenue, Isleworth, TW7 4DW
About 3 Sidmouth Avenue
3 Sidmouth Avenue is a three-bedroom semi-detached house in Isleworth (TW7 4DW). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (May 2021) shows an E (score 43), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 88), a 3-band jump. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.
It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Today's modelled estimate of £614,000 is 15.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£631/sq ft) was about 46.2% above the typical sold price in the postcode. Most recent transfer: October 2021 at £530,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 3 Sidmouth Avenue
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
- Bathrooms2
Outside
- Private gardenYes
- ParkingOff street
- Cul-de-sacYes
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
3 Sidmouth Avenue has no planning applications on record.
Notable planning nearby
8applications of note in the surrounding area
We flagged 2 things worth checking at 3 Sidmouth Avenue
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
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£614,000
Modelled from EPC, postcode comparables.
£530,000
Recorded with HM Land Registry.
Sales timeline
25 October 2021Most recent
£530,000
Median price across the last 5 sales in TW7 4DW: £575,000 (2024–2022).
Nearby sales in TW7 4DW
Everything we know about 3 Sidmouth Avenue, 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 Sidmouth Avenue homes
On epc rating, 3 Sidmouth Avenue runs well behind the street norm.
Price per m²
£6,795
Street avg £5,871
Floor Area
78 m²
Street avg 97 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
5.8 t/year
Street avg 4.6 t/year
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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
0.2 km
West Thames College — bus stop.
Closest school
0.2 km
West Thames College. 47 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
53.7dB
Night-time· 23:00 – 07:00
43.3dB