12 Fairfield is a four-bedroom semi-detached house in Fairburn, Knottingley, Knottingley (WF11 9LB). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (February 2023) shows a C (score 72). The rating has held steady at C across 2 certificates since June 2011. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Average and window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83). Records show the property has been extended at some point in its history.
Sale prices here have outpaced England HPI: 5% per year against 0.1% for the wider region. On a £-per-square-foot basis, the last sale (£245/sq ft) was about 66.5% above the typical sold price in the postcode. Most recent transfer was September 2025 at £235,000 — fresh data. One planning record on file: an extension approved in 2007. Past consents include an extension, meaningful when judging how the property has evolved. At 89 m² it's 20.3% larger than the typical home in the postcode (74 m² median across 33 EPCs).
Council records include a two-storey side and rear extension at 12 Fairfield.
Extension: Two storey · Side and rear of property
Proposed two storey side and rear extension
Latest sale on 12 Fairfield was the highest on Land Registry record across the postcode.
£240,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.0% per year over 14 years.
£235,000
Growth on file: 5.0% per year over 14 years.
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On years held, 12 Fairfield runs well behind the street norm.
Price per m²
£2,640
Street avg £1,784
Floor Area
89 m²
Street avg 76 m²
Habitable Rooms
5 rooms
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Rawfield Lane — bus stop.

Daytime· 07:00 – 23:00
54.3dB

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Changes detected from historical EPC data
More low energy lighting installed
Full planning data for 12 Fairfield, Fairburn, Knottingley, WF11 9LB
Every application and decision on this property and nearby, in full, in the report.
5 September 2025Most recent
£235,000
+4.4%over 2 years24 April 2023
£225,000
+89.1%over 11 years25 August 2011
£118,995
Median price across the last 5 sales in WF11 9LB: £210,000 (2025–2021).
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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Street avg 5 rooms
CO₂ Emissions
3.0 t/year
Street avg 3.4 t/year
WF11 9LH
Closest school
0.3 km
Fairburn Community Primary School. 4 schools nearby.
Night-time· 23:00 – 07:00
45.8dB