Flat 3, 6 Upper Tachbrook Street, London, SW1V 1SH

Flat 3 is a one-bedroom mid-terrace house in London (SW1V 1SH). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1900-1929 and council tax band D. At 38 m² this is the smallest unit on EPC record across the building (38–52 m²). On EPC score it ranks first in the building (77 versus a worst of 73). Other recorded features include a balcony. Period features are noted in the property record. The latest certificate (November 2022) shows a C (score 77), near the top of the C band. When first surveyed in May 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good.

Untraded for 23 years, with the last transfer in September 2003. Across 1997–2003, sale prices on this property compounded at 13.5% per year. Today's modelled estimate of £404,000 sits 140.5% above the 2003 sale of £168,000. On a £-per-square-foot basis, the last sale (£411/sq ft) was about 51.5% below the postcode norm. At 38 m² it sits well below the postcode median (57 m² across 13 EPCs), making it one of the more compact homes locally.