Apartment 1, 123 St Georges Square, Westminster, London, SW1V 3QP

Apartment 1 is an end-of-terrace house in Westminster, London, London (SW1V 3QP). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to before 1900 and council tax band E. At 46 m² this is the smallest unit on EPC record across the building (46–142 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (September 2013) shows a C (score 71). When first surveyed in March 2010 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The latest certificate is from September 2013, so improvements made since then won't be reflected.

15 planning records sit against the property, 15 approved, 0 refused. Past consents include new windows, an extension, partial demolition and subdivision, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. At 46 m² it sits well below the postcode median (87 m² across 61 EPCs), making it one of the more compact homes locally. On a £-per-square-foot basis, the last sale (£1,252/sq ft) was about 61.3% above the typical sold price in the postcode. Last sold in January 2014, so it's been off the market for around 12 years.