Flat 3, 17 Crowstone Road, Westcliff On Sea, SS0 8BA

Flat 3 is an end-of-terrace house in Westcliff On Sea (SS0 8BA). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 1900-1929. At 60 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 56–60 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 (54 versus a best of 67). The latest certificate (April 2021) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2010); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Average and lighting went from Poor to Very Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to D (score 62).

At 60 m² it sits well below the postcode median (126 m² across 24 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).