Flat 3, 17 Marlborough Road, London, N22 8NB

Flat 3 is a mid-terrace house in London (N22 8NB). It has a recorded floor area of 22 m² (around 237 sq ft), construction records dating it to 1900-1929 and council tax band B. At 22 m² this is the smallest unit on EPC record across the building (22–27 m²). The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (52 versus a best of 63). The latest certificate (November 2020) shows an E (score 52), well below the UK norm with real room to improve. When first surveyed in February 2009 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average. The recommended improvements would lift it to C (score 75), a 2-band jump. Main heating runs on electricity.

At 22 m² it sits well below the postcode median (57 m² across 50 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs).