21b is a two-bedroom semi-detached house in Byram, Knottingley, Knottingley (WF11 9EB). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1950-1966 and council tax band A. At 61 m² this is the smallest unit on EPC record across the building (61–93 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (March 2018) shows a C (score 71). The rating has held steady at C across 2 certificates since March 2015. Between certificates, roof efficiency went from Poor to Good; while wall efficiency dropped from Good to Poor and lighting dropped from Very Good to Good.
Sale prices here have outpaced England HPI: 5.8% per year against 0% for the wider region. Today's modelled estimate of £111,000 sits 70.8% above the 2019 sale of £65,000. On a £-per-square-foot basis, the last sale (£99/sq ft) was about 27.4% below the postcode norm. Most recent transfer: May 2019 at £65,000.
No planning applications are recorded against 21b, Wood Lea, Byram, Knottingley, WF11 9EB. The full report also covers planning activity across the surrounding area.
Full planning data for 21b, Wood Lea, Byram, Knottingley, WF11 9EB
Every application and decision on this property and nearby, in full, in the report.
21b has more than doubled in price since the earliest registered sale in 2001.
£111,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.8% per year over 18 years.
£65,000
Growth on file: 5.8% per year over 18 years.
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On floor area, 21b runs well behind the street norm.
EPC Rating
71 (C)
Street avg 71 (C)
Floor Area
61 m²
Street avg 64 m²
CO₂ Emissions
2.3 t/year
Street avg 2.7 t/year
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Woodlea — bus stop.

Daytime· 07:00 – 23:00
51.2dB

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Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
31 May 2019Most recent
£65,000
+4.8%over 14 years27 August 2004
£62,000
+158.3%over 2 years1 October 2001
£24,000
Median price across the last 5 sales in WF11 9EB: £132,000 (2021–2018).
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
3 rooms
Street avg 3 rooms
WF11 9NN
Closest school
0.5 km
Brotherton and Byram Community Primary Academy. 10 schools nearby.
Night-time· 23:00 – 07:00
42.5dB