11 Chester Street, Westminster, London, SW1X 7BB

11 Chester Street is a five-bedroom mid-terrace house in Westminster, London, London (SW1X 7BB). It has a recorded floor area of 73 m² (around 786 sq ft) and construction records dating it to before 1900. At 73 m² this is the smallest unit on EPC record across the building (73–384 m²). The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (77 versus a worst of 21). The latest certificate (March 2024) shows a C (score 77), near the top of the C band. The rating has held steady at C across 2 certificates since May 2012. Between certificates, window efficiency went from Average to Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would push it to B (score 82).

Sale prices here have outpaced London HPI: 20.6% per year against 0% for the wider region. Today's modelled estimate of £1,421,000 is 43.2% below the 2012 sale of £2,500,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£3,182/sq ft) was about 135.5% above the typical sold price in the postcode. 9 planning records sit against the property, 4 approved, 5 refused. The record references listed-building consent, which constrain future alterations. At 73 m² it sits well below the postcode median (167 m² across 15 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 73% of similar EPCs). 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. On the market in September 2012 and unlisted since — roughly 14 years.