Flat 1, 136 Standishgate, Wigan, WN1 1ER

Flat 1 is a one-bedroom detached house in Wigan (WN1 1ER). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 2007 onwards and council tax band A. At 48 m² this is the smallest unit on EPC record across the building (48–121 m²). The property has solar panels on record, all of which lower running costs and tend to lift resale appeal. The latest certificate (May 2017) shows a C (score 75), near the top of the C band. When first surveyed in November 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and lighting went from Very Poor to Average; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

Held since April 2008 — that's 18 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 48 m² it sits well below the postcode median (101 m² across 3 EPCs), making it one of the more compact homes locally. Across 2005–2008, sale prices on this property compounded at -35.2% per year. Today's modelled estimate of £107,000 is 35.4% above the 2008 sale price.