67a, Sidmouth Avenue, Isleworth, TW7 4DR
About 67a
67a is an end-of-terrace house in Isleworth (TW7 4DR). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (February 2025) shows a C (score 76), near the top of the C band. The rating has held steady at C across 3 certificates since December 2008. The recommended improvements would push it to B (score 85).
At 124 m² the property is well over the postcode median (92 m² across 19 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 67a
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
Low energy lighting percentage decreased
More low energy lighting installed
Planning history
67a has 2 separate extension applications on the council record.
- Jan 2007ExtensionFullIn report
Extension: Single storey · Side of property
Erection of single storey side extension to house
- Reference
- P/2006/3812
- Apr 2006ExtensionFullIn report
Extension: Single storey · Side of property
Erection of a single storey side extension to existing house
- Reference
- P/2006/0406
We flagged 2 things worth checking at 67a
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
30-day money-back guarantee
Sales history & valuation
67a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£594,000
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 TW7 4DR: £640,000 (2024–2019).
Nearby sales in TW7 4DR
Everything we know about 67a, 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
EPC Rating for 67a runs comfortably ahead of the street norm.
EPC Rating
76 (C)
Street avg 62 (D)
Floor Area
124 m²
Street avg 101 m²
CO₂ Emissions
2.8 t/year
Street avg 4.4 t/year
Habitable Rooms
6 rooms
Street avg 6 rooms
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
0.2 km
West Thames College — bus stop.
Closest school
0.2 km
West Thames College. 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
53.4dB

Night-time· 23:00 – 07:00
43.2dB