28b, Alstone Mews, Cheltenham, GL51 8EU

28b is a two-bedroom semi-detached house in Cheltenham (GL51 8EU). It has a recorded floor area of 44 m² (around 472 sq ft), construction records dating it to 2003-2006 and council tax band B. At 44 m² this is the smallest unit on EPC record across the building (44–123 m²). The building's EPC ratings span D to B, with this unit at the top. On EPC score it ranks first in the building (85 versus a worst of 63). The latest certificate (March 2011) returns a high B (score 85), putting the home a stone's throw from an A rating. The latest certificate is from March 2011, so improvements made since then won't be reflected.

Held since June 2007 — that's 19 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 44 m² it sits well below the postcode median (82 m² across 34 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the top 10% of properties in this postcode. Across 2005–2007, sale prices on this property compounded at 7.2% per year. Today's modelled estimate of £170,000 is 46.2% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£246/sq ft) was about 16.8% above the typical sold price in the postcode.