Flat 1, 5 Austral Street, Southwark, London, SE11 4SJ

Flat 1 is a two-bedroom detached house in Southwark, London, London (SE11 4SJ). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to before 1900 and council tax band C. At 56 m² this is the smallest unit on EPC record across the building (56–129 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (55 versus a best of 75). The latest certificate (February 2012) shows a D (score 55), a step below the typical UK home. The rating has held steady at D across 5 certificates since July 2009. Between certificates, window efficiency went from Very Poor to Poor. The latest certificate is from February 2012, so improvements made since then won't be reflected.

Held since September 2006 — that's 20 years off the open market, well above the local norm. Across 1996–2006, sale prices on this property compounded at 20.7% per year. Today's modelled estimate of £537,000 sits 65.2% above the 2006 sale of £325,000. On a £-per-square-foot basis, the last sale (£539/sq ft) was about 44.1% above the typical sold price in the postcode. At 56 m² it's 17.6% smaller than the typical home in the postcode (68 m² median across 21 EPCs).