Flat 3, 5 Onslow Square, London, SW7 3NJ

Flat 3 is a two-bedroom semi-detached house in London (SW7 3NJ). It has a recorded floor area of 117 m² (around 1259 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (January 2022) shows a D (score 60), on the cusp of jumping into the C band. When first surveyed in June 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 76). At 117 m² this is the 4th smallest of 7 units on EPC record in the building, where floor areas span 101–211 m². The building's EPC ratings span E to C across 7 units on file. Period features are noted in the property record.

Across 2005–2012, sale prices on this property compounded at -11.2% per year. Today's modelled estimate of £1,333,000 sits 157% above the 2012 sale of £518,619. On a £-per-square-foot basis, the last sale (£412/sq ft) was about 45.6% below the postcode norm. 14 years since the last transfer (September 2012).