81a, High Street West, Glossop, SK13 8AZ

81a is a mid-terrace house in Glossop (SK13 8AZ). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1900-1929 and council tax band B. At 45 m² this is the 4th smallest of 8 units on EPC record in the building, where floor areas span 37–78 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (March 2018) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 2 certificates since February 2011. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Good to Average.

It hasn't traded since November 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. On a £-per-square-foot basis, the last sale (£320/sq ft) was about 43.8% above the typical sold price in the postcode.