21a, Colomb Road, Gorleston, Great Yarmouth, NR31 8BT

21a is a detached house in Gorleston, Great Yarmouth, Great Yarmouth (NR31 8BT). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1950-1966 and council tax band A. At 48 m² this is the smallest unit on EPC record across the building (48–126 m²). The building's EPC ratings span G to B, with this unit at the bottom. On EPC score it ranks last in the building (17 versus a best of 85). The latest certificate (May 2022) shows a G (score 17), near the bottom of the EPC scale. Earlier certificates rated it F (February 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Poor to Average and window efficiency went from Poor to Good; while main heating dropped from Poor to Very Poor. The recommended improvements would lift it to E (score 54), a 2-band jump. Main heating runs on electricity.

At 48 m² it sits well below the postcode median (79 m² across 32 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 3 planning records sit against the property, 0 approved, 0 refused.