12 Marlborough Avenue is a two-bedroom semi-detached house in Byram, Knottingley, Knottingley (WF11 9NP). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (July 2011) shows an F (score 28), near the bottom of the EPC scale. Main heating runs on electricity. The latest certificate is from July 2011, so improvements made since then won't be reflected. The home occupies a cul-de-sac position.
At 53 m² it's 17.8% smaller than the typical home in the postcode (65 m² median across 16 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £169,000 sits 56.5% above the 2012 sale of £108,000. Last sold in August 2012, so it's been off the market for around 14 years.
12 Marlborough Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
This certificate is over 10 years old and is no longer valid.Expired 14 Jul 2021
No planning applications are recorded against 12 Marlborough Avenue, Byram, Knottingley, WF11 9NP. The full report also covers planning activity across the surrounding area.
Full planning data for 12 Marlborough Avenue, Byram, Knottingley, WF11 9NP
Every application and decision on this property and nearby, in full, in the report.
£169,000
Modelled from EPC, postcode comparables.
£108,000
Recorded with HM Land Registry.
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EPC Rating for 12 Marlborough Avenue lags the street by a wide margin.
Price per m²
£2,038
Street avg £2,454
Floor Area
53 m²
Street avg 68 m²
Habitable Rooms
3 rooms
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Sutton Lane — bus stop.

Daytime· 07:00 – 23:00
50.2dB

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29 August 2012Most recent
£108,000
Median price across the last 5 sales in WF11 9NP: £190,000 (2025–2018).
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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Street avg 5 rooms
CO₂ Emissions
5.1 t/year
Street avg 2.8 t/year
WF11 9EG
Closest school
0.6 km
Brotherton and Byram Community Primary Academy. 8 schools nearby.
Night-time· 23:00 – 07:00
41.8dB