Alexander House, Flat 23, Royal Quarter, Seven Kings Way, Kingston Upon Thames, KT2 5BY

Alexander House is a one-bedroom semi-detached house in Kingston Upon Thames (KT2 5BY). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 2007 onwards and council tax band D. The latest certificate (January 2020) returns a B (score 84), comfortably above the UK average. The rating has held steady at B across 2 certificates since March 2009. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. Main heating runs on electricity. At 44 m² this is the 8th smallest of 40 units on EPC record in Alexander House, where floor areas span 20–121 m². The building's EPC ratings span D to B, with this unit at the top.

Held since March 2004 — that's 22 years off the open market, well above the local norm. Today's modelled estimate of £311,000 sits 53.6% above the 2004 sale of £202,500. At 44 m² it's 29% smaller than the typical home in the postcode (62 m² median across 39 EPCs).