Flat 3, 66 High Street, Cheltenham, GL50 1EE

Flat 3 is a one-bedroom mid-terrace house in Cheltenham (GL50 1EE). It has a recorded floor area of 31 m² (around 334 sq ft) and construction records dating it to before 1900. At 31 m² this is the smallest unit on EPC record across the building (31–48 m²). The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (72 versus a worst of 61). The latest certificate (September 2018) shows a C (score 72). The rating has held steady at C across 2 certificates since March 2011. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

Today's modelled estimate of £162,000 sits 80% above the 2015 sale of £90,000. On a £-per-square-foot basis, the last sale (£270/sq ft) was about 23.1% above the typical sold price in the postcode. At 31 m² it sits well below the postcode median (70 m² across 18 EPCs), making it one of the more compact homes locally. On the market in February 2015 and unlisted since — roughly 11 years.