16 Sidmouth Avenue, Isleworth, TW7 4DW
About 16 Sidmouth Avenue
16 Sidmouth Avenue is a four-bedroom semi-detached house in Isleworth (TW7 4DW). It has a recorded floor area of 28 m² (around 301 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (January 2025) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in February 2024 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor. The recommended improvements would push it to C (score 72). At 28 m² this is the 2nd smallest of 26 units on EPC record in the building, where floor areas span 18–141 m². The building's EPC ratings span E to C across 26 units on file. Period features are noted in the property record. The home occupies a cul-de-sac position.
At 28 m² it sits well below the postcode median (89 m² across 25 EPCs), making it one of the more compact homes locally. Across 1997–2024, sale prices on this property compounded at 6.3% per year. On a £-per-square-foot basis, the last sale (£2,223/sq ft) was about 414.8% above the typical sold price in the postcode. Sold November 2024 for £670,000.
Know exactly what you're buying at 16 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
- Bedrooms4
- Bathrooms2
Outside
- GarageDouble, Detached
- Cul-de-sacYes
Building
- Period featuresYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Changed to a more efficient fuel source
Wall insulation improved
Planning history
16 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 16 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
Price for 16 Sidmouth Avenue has grown more than fourfold since the 1997 starting point.
£732,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.3% per year over 27 years.
£670,000
Growth on file: 6.3% per year over 27 years.
Sales timeline
22 November 2024Most recent
£670,000
+116.1%over 19 years25 July 2005
£310,000
+148.0%over 8 years26 June 1997
£125,000
Median price across the last 5 sales in TW7 4DW: £575,000 (2024–2022).
Nearby sales in TW7 4DW
Everything we know about 16 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

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. 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