29 Marlborough Avenue is a three-bedroom detached house in Byram, Knottingley, Knottingley (WF11 9NP). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (May 2016) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in February 2014 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Very Good, hot-water efficiency went from Poor to Good and main heating went from Average to Good; while window efficiency dropped from Good to Average and lighting dropped from Average to Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from May 2016, so improvements made since then won't be reflected.
At 77 m² it's 28.3% larger than the typical home in the postcode (60 m² median across 16 EPCs). Today's modelled estimate of £259,000 is 36.3% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£229/sq ft) was about 15.7% above the typical sold price in the postcode. On the market in March 2017 and unlisted since — roughly 9 years.
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This certificate is over 10 years old and is no longer valid.Expired 20 May 2026
No planning applications are recorded against 29 Marlborough Avenue, Byram, Knottingley, WF11 9NP. The full report also covers planning activity across the surrounding area.
Full planning data for 29 Marlborough Avenue, Byram, Knottingley, WF11 9NP
Every application and decision on this property and nearby, in full, in the report.
29 Marlborough Avenue valuation sits well clear of the typical sold price in this postcode.
£259,000
Modelled from EPC, postcode comparables.
£190,000
Recorded with HM Land Registry.
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29 Marlborough Avenue is notably below the street on epc rating.
Price per m²
£2,468
Street avg £2,421
Floor Area
77 m²
Street avg 66 m²
Habitable Rooms
4 rooms
Street avg 5 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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Changes detected from historical EPC data
Changed to a more efficient fuel source
Roof insulation improved
Fuel source changed
Loft insulation upgraded to recommended levels
More low energy lighting installed
Switched from solid fuel to cleaner energy source
Hot water system upgraded
Wall insulation upgraded
Roof insulation improved
Low energy lighting percentage decreased
10 March 2017Most recent
£190,000
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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CO₂ Emissions
3.4 t/year
Street avg 2.9 t/year
WF11 9HF
Closest school
0.6 km
Brotherton and Byram Community Primary Academy. 8 schools nearby.
Night-time· 23:00 – 07:00
41.8dB