Cottonside, Apartment 4, Heritage Way, Wigan, WN3 4BG

Cottonside is a two-bedroom mid-terrace house in Wigan (WN3 4BG). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1996-2002 and council tax band B. At 60 m² this is the 12th smallest of 28 units on EPC record in Cottonside, where floor areas span 53–69 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (53 versus a best of 80). The latest certificate (May 2021) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it C (March 2009); the latest reading is 2 bands lower. Between certificates, lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity.

Held since June 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.