Flat B, 92 Onslow Gardens, London, SW7 3BS

Flat B is an end-of-terrace house in London (SW7 3BS). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (March 2016) shows a C (score 72). When first surveyed in October 2014 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Very Poor to Average. The recommended improvements would push it to B (score 81). The latest certificate is from March 2016, so improvements made since then won't be reflected.

Today's modelled estimate of £1,627,000 is 61.3% below the 2016 sale of £4,200,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£5,345/sq ft) was about 585.5% above the typical sold price in the postcode. On the market in December 2016 and unlisted since — roughly 9 years.