15 Cornwall Grove, Hounslow, London, W4 2LB
About 15 Cornwall Grove
15 Cornwall Grove is a four-bedroom mid-terrace house in Hounslow, London, London (W4 2LB). It has a recorded floor area of 144 m² (around 1550 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (May 2025) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2013. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Good; while roof efficiency dropped from Good to Very Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. Period features are noted in the property record.
Untraded for 22 years, with the last transfer in July 2004. At 144 m² the property is well over the postcode median (72 m² across 49 EPCs), placing it in the larger end of the local stock. Across 1999–2004, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £1,231,000 sits 184.6% above the 2004 sale of £432,500. On a £-per-square-foot basis, the last sale (£279/sq ft) was about 26.9% below the postcode norm. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
What this property has
Inside
- Bedrooms4
- Bathrooms3
- CloakroomYes
- EnsuiteYes
Building
- Period featuresYes
- RefurbishedYes
Everything you need to know about 15 Cornwall Grove
The true value, the hidden risks and the full sale history, in one report.
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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
Glazing upgraded to newer, more efficient type
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,645 · Includes VAT
Planning history
15 Cornwall Grove has 2 separate extension applications on the council record.
3 applications on record at 15 Cornwall Grove, Hounslow, London, W4 2LB
- Aug 2010Loft ConversionOutlineOutcome in report
Certificate of Lawfulness for the proposed erection of a rear roof extension with front roof windows to the house.
Extension- Reference
- P/2010/1552
- More recent applications — locked
- ExtensionMar 2016Decision
- ExtensionJan 2016Decision
Unlock 15 Cornwall Grove, Hounslow, London, W4 2LB's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (3 on record)
- All 3 applications on this property in full, plus 5 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
15 Cornwall Grove's estimated value is more than triple its earliest registered sale price (1999).
£1,231,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 5 years.
£432,500
Growth on file: 7.3% per year over 5 years.
Sales timeline
15 July 2004Most recent
£432,500
+39.5%over 4 years28 October 1999
£310,000
Median price across the last 5 sales in W4 2LB: £1,100,000 (2025–2023).
Nearby sales in W4 2LB
40 Cornwall Grove, Hounslow, London, W4 2LB
Sold Jun 2025
£1,355,00035 Cornwall Grove, Hounslow, London, W4 2LB
Sold May 2025
£1,650,00026 Cornwall Grove, Hounslow, London, W4 2LB
Sold Jun 2024
£515,000Ground Floor Flat, 30 Cornwall Grove, London, W4 2LB
Sold Aug 2023
£475,00023 Cornwall Grove, Hounslow, London, W4 2LB
Sold Apr 2023
£1,100,000
Versus other Cornwall Grove homes
On price per m², 15 Cornwall Grove runs well behind the street norm.
Price per m²
£3,003
Street avg £7,672
Floor Area
144 m²
Street avg 134 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
5.1 t/year
Street avg 5.6 t/year
Everything you need to know about 15 Cornwall Grove
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Dorchester Grove — bus stop.
Closest school
0.3 km
The William Hogarth Primary School. 58 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
57.0dB

Night-time· 23:00 – 07:00
49.4dB









