Flat 4, 58 York Street, Barnoldswick, BB18 5BD

Flat 4 is an end-of-terrace house in Barnoldswick (BB18 5BD). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to before 1900 and council tax band A. At 37 m² this is the smallest unit on EPC record across the building (37–42 m²). The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (May 2017) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in March 2009 the rating was G, the property has climbed 3 bands since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Average to Good and hot-water efficiency went from Average to Good. The recommended improvements would push it to C (score 75).

Across 2007–2016, sale prices on this property compounded at 4.2% per year. Today's modelled estimate of £113,000 sits 73.8% above the 2016 sale of £65,000. On a £-per-square-foot basis, the last sale (£163/sq ft) was about 74.9% above the typical sold price in the postcode. At 37 m² it sits well below the postcode median (78 m² across 31 EPCs), making it one of the more compact homes locally. On the market in September 2016 and unlisted since — roughly 10 years.