Flat 1, 86 Onslow Gardens, London, SW7 3BS

Flat 1 is a mid-terrace house in London (SW7 3BS). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to before 1900 and council tax band F. At 38 m² this is the smallest unit on EPC record across the building (38–74 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 (67 versus a best of 76). The latest certificate (July 2019) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2009. The recommended improvements would push it to C (score 77).

It hasn't traded since July 1996, a hold of 30 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £671,000 sits 637.4% above the 1996 sale of £91,000. On a £-per-square-foot basis, the last sale (£222/sq ft) was about 71.5% below the postcode norm. At 38 m² it sits well below the postcode median (67 m² across 26 EPCs), making it one of the more compact homes locally.