22 Marlborough Avenue is a two-bedroom detached house in Byram, Knottingley, Knottingley (WF11 9NP). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1976-1982 and council tax band C. Other recorded features include a conservatory. The latest certificate (August 2024) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 87).
Sale prices here have outpaced England HPI: 2.6% per year against 0% for the wider region. Today's modelled estimate of £254,000 is 22.7% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£235/sq ft) was about 16.7% above the typical sold price in the postcode. At 82 m² the property is well over the postcode median (60 m² across 16 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). It changed hands recently, sold June 2025 for £207,000. One planning record on file: an extension approved in 2004. Past consents include an extension, meaningful when judging how the property has evolved.
22 Marlborough Avenue has an approved rear extension on the planning record.
Extension: Rear of property
Proposed rear extension to create bedroom and conservatory at
22 Marlborough Avenue valuation sits well clear of the typical sold price in this postcode.
£254,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 15 years.
£207,000
Growth on file: 2.6% per year over 15 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed analysis
A written breakdown of everything that matters
On floor area, 22 Marlborough Avenue stands well clear of the street.
Price per m²
£2,524
Street avg £2,417
Floor Area
82 m²
Street avg 66 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

Launch offer
Secure checkout · One-off payment
30-day money-back guarantee

View improvement recommendations
Unlock the certificate's suggested upgrades and estimated costs in the full report
Full planning data for 22 Marlborough Avenue, Byram, Knottingley, WF11 9NP
Every application and decision on this property and nearby, in full, in the report.
30 June 2025Most recent
£207,000
+47.9%over 15 years2 June 2010
£140,000
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
Ad-free · Secure Stripe checkout · One-off payment
30-day money-back guarantee

Street avg 5 rooms
CO₂ Emissions
3.2 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