4a, Copthorne Mews, Hayes, UB3 4BN
About 4a
4a is a one-bedroom detached house in Hayes (UB3 4BN). It has a recorded floor area of 29 m² (around 312 sq ft), construction records dating it to 2007-2011 and council tax band B. At 29 m² this is the smallest unit on EPC record across the building (29–120 m²). The building's EPC ratings span E to B across 31 units on file. The home occupies a cul-de-sac position. The latest certificate (March 2021) shows a C (score 72). When first surveyed in February 2010 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Average to Very Poor. Main heating runs on electricity.
It hasn't traded since March 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £186,000 is 42.5% above the 2007 sale price. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.
Know exactly what you're buying at 4a
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
- Bedrooms1
- Bathrooms1
Outside
- ParkingAllocated
- Cul-de-sacYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Floor insulation added or improved
Planning history
4a has no planning applications on record.
Notable planning nearby
17applications of note in the surrounding area
We flagged 2 things worth checking at 4a
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
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£186,000
Modelled from EPC, postcode comparables.
£130,500
Recorded with HM Land Registry.
Sales timeline
7 March 2007Most recent
£130,500
Median price across the last 5 sales in UB3 4BN: £190,000 (2025–2023).
Everything we know about 4a, 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 Copthorne Mews homes
On floor area, 4a runs well behind the street norm.
Price per m²
£4,500
Street avg £4,931
Floor Area
29 m²
Street avg 31 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.4 t/year
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UB3 4HN
1 Cranford Park Road
UB3 4PF
1 Cranford Drive
UB3 4LA
1 Hillborne Close
UB3 4RE
1 Elizabeth Fry House, Croyde Avenue
UB3 4EL
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Pinkwell Lane — bus stop.
Closest school
0.5 km
Harlington School. 24 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
58.0dB
Night-time· 23:00 – 07:00
49.8dB