9b is a property in Byram, Knottingley, Knottingley (WF11 9DY). It has a recorded floor area of 44 m² (around 475 sq ft), construction records dating it to 1950-1966 and council tax band A. At 44 m² this is the 6th smallest of 37 units on EPC record in the building, where floor areas span 36–109 m². The building's EPC ratings span G to B across 37 units on file. The latest certificate (August 2011) shows a D (score 56), a step below the typical UK home. The recommended improvements would push it to C (score 70). Main heating runs on electricity. The latest certificate is from August 2011, so improvements made since then won't be reflected.
At 44 m² it sits well below the postcode median (80 m² across 36 EPCs), making it one of the more compact homes locally.
9b's EPC is over a decade old — improvements since won't be reflected.
This certificate is over 10 years old and is no longer valid.Expired 25 Aug 2021
No planning applications are recorded against 9b, West Acres, Byram, Knottingley, WF11 9DY. The full report also covers planning activity across the surrounding area.
Full planning data for 9b, West Acres, Byram, Knottingley, WF11 9DY
Every application and decision on this property and nearby, in full, in the report.
9b has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£121,000
Modelled from EPC, postcode comparables.
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.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed analysis
A written breakdown of everything that matters
On epc rating, 9b runs well behind the street norm.
EPC Rating
56 (D)
Street avg 67 (D)
Floor Area
44 m²
Street avg 53 m²
CO₂ Emissions
4.1 t/year
Street avg 3.1 t/year
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
West Acres — bus stop.

Daytime· 07:00 – 23:00
50.4dB

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Median price across the last 5 sales in WF11 9DY: £189,000 (2025–2024).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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Habitable Rooms
1 rooms
Street avg 2 rooms
Closest school
0.5 km
Brotherton and Byram Community Primary Academy. 9 schools nearby.
Night-time· 23:00 – 07:00
41.9dB