3 4, Flat 5, Old Palace Lane, Richmond, TW9 1PG

3 4 is a mid-terrace house in Richmond (TW9 1PG). It has a recorded floor area of 26 m² (around 280 sq ft) and construction records dating it to 1900-1929. At 26 m² this is the 3rd smallest of 15 units on EPC record in 3 4, where floor areas span 23–40 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (40 versus a best of 78). The latest certificate (August 2014) shows an E (score 40), well below the UK norm with real room to improve. Earlier certificates rated it D (September 2012); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Average; while hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity. The latest certificate is from August 2014, so improvements made since then won't be reflected.

At 26 m² it's 26.8% smaller than the typical home in the postcode (36 m² median across 26 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs). 4 planning records sit against the property, 0 approved, 0 refused.