Flat 4, 21 Devonshire Road, Great Yarmouth, NR30 3AL

Flat 4 is a mid-terrace house in Great Yarmouth (NR30 3AL). It has a recorded floor area of 36 m² (around 388 sq ft) and construction records dating it to 1900-1929. At 36 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 33–69 m². The building's EPC ratings span E to D, with this unit at the top. On EPC score it ranks first in the building (61 versus a worst of 39). The latest certificate (May 2019) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in March 2009 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Good to Very Good; while wall efficiency dropped from Poor to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity.

At 36 m² it sits well below the postcode median (69 m² across 46 EPCs), making it one of the more compact homes locally.