York House, Flat 9, 39 Upper Montagu Street, Westminster, London, W1H 1FR

York House is a three-bedroom detached house in Westminster, London, London (W1H 1FR). It has a recorded floor area of 161 m² (around 1738 sq ft) and construction records dating it to 1900-1929. At 161 m² this is the 21st smallest of 28 units on EPC record in York House, where floor areas span 55–264 m². The building's EPC ratings span F to C across 28 units on file. The latest certificate (January 2009) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 69). The latest certificate is from January 2009, so improvements made since then won't be reflected.

Sale prices here have outpaced London HPI: 89.8% per year against 0% for the wider region. Today's modelled estimate of £2,288,000 is 10.3% below the 2013 sale of £2,550,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£1,467/sq ft) was about 97.4% above the typical sold price in the postcode. At 161 m² the property is well over the postcode median (110 m² across 27 EPCs), placing it in the larger end of the local stock. On the market in November 2013 and unlisted since — roughly 13 years.