Flat 3, 23 Royal Crescent, London, W11 4SN

Flat 3 is an end-of-terrace house in London (W11 4SN). It has a recorded floor area of 53 m² (around 570 sq ft) and construction records dating it to before 1900. At 53 m² this is the 2nd smallest of 5 units on EPC record in the building, where floor areas span 46–130 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (October 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2015. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 77).

Today's modelled estimate of £606,000 is 25.4% below the 2015 sale of £812,500, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£1,424/sq ft) was about 141.6% above the typical sold price in the postcode. 2 planning records sit against the property, 0 approved, 2 refused. The record references listed-building consent, which constrain future alterations. On the market in July 2015 and unlisted since — roughly 11 years.