12 John Austin Close, Kingston Upon Thames, KT2 6SU

12 John Austin Close is a two-bedroom detached house in Kingston Upon Thames (KT2 6SU). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1950-1966 and council tax band D. At 57 m² this is the 16th smallest of 31 units on EPC record in the building, where floor areas span 46–66 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (May 2019) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good and main heating went from Poor to Average; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity.

Held since March 2001 — that's 25 years off the open market, well above the local norm. Across 1998–2001, sale prices on this property compounded at 9.7% per year. Today's modelled estimate of £379,000 sits 144.5% above the 2001 sale of £155,000. It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs).