Flat 3, 3 Leinster Square, London, W2 4PL

Flat 3 is a mid-terrace house in London (W2 4PL). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1930-1949 and council tax band E. At 48 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 47–58 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 (73 versus a worst of 59). The latest certificate (April 2019) shows a C (score 73). The rating has held steady at C across 2 certificates since April 2009. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Average and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81).

It hasn't traded since April 2002, a hold of 24 years that's notably long for the area. Today's modelled estimate of £655,000 sits 163.1% above the 2002 sale of £249,000. On a £-per-square-foot basis, the last sale (£482/sq ft) was about 40.7% below the postcode norm. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension and a basement excavation, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. At 48 m² it's 17.2% smaller than the typical home in the postcode (58 m² median across 39 EPCs).