Flat 2, 3 Eccleston Square, London, SW1V 1NP

Flat 2 is a mid-terrace house in London (SW1V 1NP). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to before 1900 and council tax band D. At 41 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 37–54 m². The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (71 versus a worst of 63). The latest certificate (September 2021) shows a C (score 71). When first surveyed in October 2009 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Good and main heating went from Poor to Good; while lighting dropped from Good to Average.

Across 1995–2015, sale prices on this property compounded at 10.8% per year. Today's modelled estimate of £684,000 is 11.7% below the 2015 sale of £775,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£1,756/sq ft) was about 118% above the typical sold price in the postcode. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. On the market in September 2015 and unlisted since — roughly 11 years. At 41 m² it's 29.3% smaller than the typical home in the postcode (58 m² median across 37 EPCs).