12 Sidmouth Avenue, Isleworth, TW7 4DW
About 12 Sidmouth Avenue
12 Sidmouth Avenue is a four-bedroom mid-terrace house in Isleworth (TW7 4DW). It has a recorded floor area of 141 m² (around 1518 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (July 2022) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 82), a 2-band jump. Period features are noted in the property record. Records show the property has been extended at some point in its history.
At 141 m² the property is well over the postcode median (81 m² across 25 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Last sale on file: £740,000 in October 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 12 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
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenRear
- ParkingOff street
Building
- Heating systemGas
- Period featuresYes
- Previously extendedYes
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- May 2002DemolitionFullIn report
Extension: Single storey · Rear of property
Demolition of conservatory and the erection of a single storey rear extension to dwellinghouse
Extension- Reference
- P/2002/0985
- Feb 2002DemolitionFullIn report
Extension: Single storey · Rear of property
Demolition of conservatory and the erection of a single storey rear extension to dwellinghouse.
Extension- Reference
- P/2001/3315
We flagged 2 things worth checking at 12 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
Latest sale on 12 Sidmouth Avenue was the highest on Land Registry record across the postcode.
£773,000
Modelled from EPC, postcode comparables.
£740,000
Recorded with HM Land Registry.
Sales timeline
25 October 2022Most recent
£740,000
Median price across the last 5 sales in TW7 4DW: £575,000 (2024–2022).
Nearby sales in TW7 4DW
Everything we know about 12 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
Floor Area for 12 Sidmouth Avenue runs comfortably ahead of the street norm.
Price per m²
£5,248
Street avg £5,945
Floor Area
141 m²
Street avg 94 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.8 t/year
Street avg 4.6 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
0.2 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