Flat 1a, 28 Middleton Hall Road, Birmingham, B30 1BY

Flat 1a is a semi-detached house in Birmingham (B30 1BY). It has a recorded floor area of 20 m² (around 215 sq ft), construction records dating it to 1900-1929 and council tax band A. At 20 m² this is the 2nd smallest of 6 units on EPC record in the building, where floor areas span 17–33 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (52 versus a best of 78). The latest certificate (December 2018) shows an E (score 52), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since June 2012. Between certificates, window efficiency went from Poor to Average and lighting went from Average to Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump.

At 20 m² it's 23.1% smaller than the typical home in the postcode (26 m² median across 63 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 81% of similar EPCs).