Dorchester House, Flat 20, 228 Great Western Road, Westminster, London, W11 1BE

Dorchester House is a one-bedroom mid-terrace house in Westminster, London, London (W11 1BE). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (July 2023) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2013. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would push it to C (score 71). Main heating runs on electricity. At 44 m² this is the 34th smallest of 46 units on EPC record in Dorchester House, where floor areas span 22–114 m². The building's EPC ratings span E to B across 46 units on file.

Sale prices here have outpaced London HPI: 10.3% per year against 0% for the wider region. Today's modelled estimate of £343,000 is 22.5% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£591/sq ft) was about 77.8% above the typical sold price in the postcode. At 44 m² the property is well over the postcode median (33 m² across 45 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). On the market in January 2014 and unlisted since — roughly 12 years.