Flat 1, 100 Tooley Street, London, SE1 2TH

Flat 1 is a mid-terrace house in London (SE1 2TH). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to before 1900 and council tax band E. At 73 m² this is the largest unit on EPC record across the building (39–73 m²). The building's EPC ratings span F to B, with this unit at the bottom. On EPC score it ranks last in the building (35 versus a best of 88). The latest certificate (April 2012) shows an F (score 35), near the bottom of the EPC scale. The rating has held steady at F across 2 certificates since May 2009. Between certificates, wall efficiency dropped from Good to Very Poor. The recommended improvements would push it to E (score 53). Main heating runs on electricity. The latest certificate is from April 2012, so improvements made since then won't be reflected.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2012–2013, sale prices on this property compounded at -15.4% per year. Today's modelled estimate of £612,000 sits 65.4% above the 2013 sale of £370,000. On a £-per-square-foot basis, the last sale (£471/sq ft) was about 55.6% below the postcode norm. On the market in December 2013 and unlisted since — roughly 12 years.