Flat 7, 21 Kingsdowne Road, Surbiton, KT6 6JZ

Flat 7 is a two-bedroom detached house in Surbiton (KT6 6JZ). It has a recorded floor area of 106 m² (around 1141 sq ft), construction records dating it to 1930-1949 and council tax band D. At 106 m² this is the largest unit on EPC record across the building (51–106 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 (43 versus a best of 69). The latest certificate (September 2018) shows an E (score 43), well below the UK norm with real room to improve.

Held since October 2001 — that's 25 years off the open market, well above the local norm. Across 1997–2001, sale prices on this property compounded at 11.2% per year. Today's modelled estimate of £529,000 sits 151.9% above the 2001 sale of £210,000. On a £-per-square-foot basis, the last sale (£184/sq ft) was about 49.8% below the postcode norm. At 106 m² it sits well below the postcode median (197 m² across 15 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).