Flat 4, 92 Alderney Street, London, SW1V 4EZ

Flat 4 is a one-bedroom end-of-terrace house in London (SW1V 4EZ). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to before 1900 and council tax band E. At 47 m² this is the 2nd smallest of 3 units on EPC record in the building, where floor areas span 42–47 m². The building's EPC ratings span E to D, with this unit at the top. Other recorded features include a balcony. The latest certificate (April 2012) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 77). The latest certificate is from April 2012, so improvements made since then won't be reflected.

Held since July 2008 — that's 18 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1995–2008, sale prices on this property compounded at 10.7% per year. Today's modelled estimate of £560,000 is 49.3% above the 2008 sale price. On a £-per-square-foot basis, the last sale (£741/sq ft) was about 15.8% below the postcode norm.