Flat 5, 3 Eccleston Square, London, SW1V 1NP

Flat 5 is a mid-terrace house in London (SW1V 1NP). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 1900-1929 and council tax band D. At 37 m² this is the smallest unit on EPC record across the building (37–54 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (63 versus a best of 71). The latest certificate (March 2023) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since August 2010. Between certificates, lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average.

One historical planning record sits against the property in 2006. The record references listed-building consent, which constrain future alterations. At 37 m² it sits well below the postcode median (58 m² across 37 EPCs), making it one of the more compact homes locally. Last sale on file: £527,000 in January 2023. Across the public record there are 5 sales, relatively high churn for a single property. Across 2001–2023, sale prices on this property compounded at 4.9% per year. On a £-per-square-foot basis, the last sale (£1,323/sq ft) was about 73.4% above the typical sold price in the postcode.