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

Flat 1 is a semi-detached house in London (SW1V 1SH). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1930-1949 and council tax band E. At 52 m² this is the largest unit on EPC record across the building (38–52 m²). On EPC score it ranks last in the building (73 versus a best of 77). The latest certificate (November 2022) shows a C (score 73). When first surveyed in February 2013 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Poor to Very Poor. The recommended improvements would push it to B (score 81).

Across 2005–2018, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £547,000 is 19.6% below the 2018 sale of £680,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£1,215/sq ft) was about 126.8% above the typical sold price in the postcode. Last sale on file: £680,000 in June 2018.