21 Cornwall Mews South, Kensington And Chelsea, London, SW7 4RZ

21 Cornwall Mews South is a detached house in Kensington And Chelsea, London, London (SW7 4RZ). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to before 1900 and council tax band F. At 78 m² this is the 4th smallest of 16 units on EPC record in the building, where floor areas span 63–153 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 41). The latest certificate (February 2021) shows a C (score 79), near the top of the C band. When first surveyed in October 2008 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Very Good and main heating went from Average to Good.

Sale prices here have outpaced London HPI: 6.7% per year against 0% for the wider region. Today's modelled estimate of £1,054,000 is 12.9% below the 2021 sale of £1,210,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£1,441/sq ft) was about 131.8% above the typical sold price in the postcode. Most recent transfer: September 2021 at £1,210,000. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. At 78 m² it's 21.2% smaller than the typical home in the postcode (99 m² median across 15 EPCs). Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). 4 planning records sit against the property, 4 approved, 0 refused.