Flat 3, 47 Borough Street, Castle Donington, Derby, DE74 2LB

Flat 3 is a mid-terrace house in Castle Donington, Derby, Derby (DE74 2LB). It has a recorded floor area of 32 m² (around 344 sq ft), construction records dating it to before 1900 and council tax band A. At 32 m² this is the smallest unit on EPC record across the building (32–48 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 (79 versus a worst of 64). The latest certificate (August 2019) shows a C (score 79), near the top of the C band. The rating has held steady at C across 3 certificates since April 2009. Between certificates, lighting went from Average to Very Good and main heating went from Poor to Average; while wall efficiency dropped from Very Good to Poor and window efficiency dropped from Good to Poor. The recommended improvements would push it to B (score 83). Main heating runs on electricity.

At 32 m² it sits well below the postcode median (53 m² across 17 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs).