21 Flanders Road, Hounslow, London, W4 1NQ
About 21 Flanders Road
21 Flanders Road is a semi-detached house in Hounslow, London, London (W4 1NQ). It has a recorded floor area of 157 m² (around 1690 sq ft), construction records dating it to 1900-1929 and council tax band G. The latest certificate (February 2026) 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. This certificate was lodged in the last six months, so the rating reflects current condition.
2 planning records sit against the property, 1 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs).
Everything you need to know about 21 Flanders Road
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
Planning history
Planning history at 21 Flanders Road is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
2 applications on record at 21 Flanders Road, Hounslow, London, W4 1NQ
- Nov 2023Tree WorksTreesOutcome in report
Works to trees in a conservation area: Leyland Cypress (T1) - Lift low hanging branches to approx. 2.5 metres above ground level. - Reduce height by approx. 1.5 - 2 metres. - Trim all aspects of the crown by as much as possible without losing the green screen. Box Elder (T2) - Reduce all aspects of the crown by approx. 1.5 metres all over to allow more light into the garden. Mimosa (T3) - Reduce all aspects of the crown by approx. 1 - 1.5 metres.
Conservation Area- Documents
- 4 docs on file
- Reference
- P/2023/3059
- More recent applications — locked
- Tree WorksMay 2024Decision
Unlock 21 Flanders Road, Hounslow, London, W4 1NQ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 3 notable nearby
- The 8 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21 Flanders Road has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
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 W4 1NQ: £1,400,000 (2024–2012).
Nearby sales in W4 1NQ
9 Flanders Road, Hounslow, London, W4 1NQ
Sold Jan 2024
£1,600,0003 Flanders Road, Hounslow, London, W4 1NQ
Sold Jan 2023
£1,400,0005 Flanders Road, Hounslow, London, W4 1NQ
Sold May 2022
£1,500,00019 Flanders Road, Hounslow, London, W4 1NQ
Sold Sept 2007
£1,100,0007 Flanders Road, Hounslow, London, W4 1NQ
Sold Jun 2006
£720,000
Versus other Flanders Road homes
EPC Rating for 21 Flanders Road lags the street by a wide margin.
EPC Rating
67 (D)
Street avg 66 (D)
Floor Area
157 m²
Street avg 156 m²
CO₂ Emissions
4.8 t/year
Street avg 5.3 t/year
Habitable Rooms
6 rooms
Street avg 7 rooms
Everything you need to know about 21 Flanders Road
The true value, the hidden risks and the full sale history, in one report.
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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
0.2 km
Turnham Green — bus stop.
Closest school
0.7 km
Southfield Primary School. 53 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
54.6dB

Night-time· 23:00 – 07:00
45.1dB









