20a is a detached house in Byram, Knottingley, Knottingley (WF11 9DZ). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (May 2014) shows a D (score 68), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 89), a 2-band jump. The latest certificate is from May 2014, so improvements made since then won't be reflected.
One planning record on file: an extension approved in 2005. Past consents include an extension, meaningful when judging how the property has evolved. At 91 m² it's 21.3% larger than the typical home in the postcode (75 m² median across 34 EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
This certificate is over 10 years old and is no longer valid.Expired 28 May 2024
20a has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
Proposed erection of a single storey rear extension
20a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£235,000
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 floor area, 20a stands well clear of the street.
EPC Rating
68 (D)
Street avg 64 (D)
Floor Area
91 m²
Street avg 86 m²
CO₂ Emissions
3.5 t/year
Street avg 3.7 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
50.0dB

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Full planning data for 20a, Byram Park Road, Byram, Knottingley, WF11 9DZ
Every application and decision on this property and nearby, in full, in the report.
Median price across the last 5 sales in WF11 9DZ: £152,000 (2024–2018).
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
5 rooms
Street avg 4 rooms
WF11 9NB
Closest school
0.6 km
Brotherton and Byram Community Primary Academy. 9 schools nearby.
Night-time· 23:00 – 07:00
41.5dB