27 Marlborough Avenue is a two-bedroom detached house in Byram, Knottingley, Knottingley (WF11 9NP). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (June 2024) shows a C (score 72). When first surveyed in October 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Average to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 89). 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% for the wider region. Today's modelled estimate of £229,000 is 23.8% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£291/sq ft) was about 45% above the typical sold price in the postcode. A recent sale: £185,000 in August 2025. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs).
No planning applications are recorded against 27 Marlborough Avenue, Byram, Knottingley, WF11 9NP. The full report also covers planning activity across the surrounding area.
Full planning data for 27 Marlborough Avenue, Byram, Knottingley, WF11 9NP
Every application and decision on this property and nearby, in full, in the report.
27 Marlborough Avenue has more than tripled in price since its earliest registered sale in 2001.
£229,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.0% per year over 24 years.
£185,000
Growth on file: 5.0% per year over 24 years.
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27 Marlborough Avenue is notably below the street on years held.
Price per m²
£3,136
Street avg £2,370
Floor Area
59 m²
Street avg 67 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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Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
28 August 2025Most recent
£185,000
+230.4%over 24 years4 April 2001
£56,000
Median price across the last 5 sales in WF11 9NP: £190,000 (2025–2017).
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
2.2 t/year
Street avg 3.0 t/year
WF11 9EU
Closest school
0.6 km
Brotherton and Byram Community Primary Academy. 8 schools nearby.
Night-time· 23:00 – 07:00
41.8dB