18a, Crescent Road, Haringey, London, N22 7RS

18a is a mid-terrace house in Haringey, London, London (N22 7RS). It has a recorded floor area of 43 m² (around 463 sq ft) and construction records dating it to 1930-1949. The latest certificate (October 2020) shows an E (score 45), well below the UK norm with real room to improve. When first surveyed in July 2011 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Poor, window efficiency went from Poor to Average and lighting went from Good to Very Good. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity. At 43 m² this is the 6th smallest of 25 units on EPC record in the building, where floor areas span 18–109 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (45 versus a best of 81).

At 43 m² it's 24.6% smaller than the typical home in the postcode (57 m² median across 31 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs).