13 Callow Street, Kensington And Chelsea, London, SW3 6BJ

13 Callow Street is a two-bedroom mid-terrace house in Kensington And Chelsea, London, London (SW3 6BJ). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to before 1900. The latest certificate (May 2019) shows an F (score 27), near the bottom of the EPC scale. Earlier certificates rated it C (April 2010); the latest reading is 3 bands lower. Between certificates, lighting went from Very Poor to Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 77), a 3-band jump. Main heating runs on electricity. At 54 m² this is the 3rd smallest of 12 units on EPC record in the building, where floor areas span 50–113 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (27 versus a best of 77).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: an extension approved in 2001. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £982,000 is 30.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£1,299/sq ft) was about 98.6% above the typical sold price in the postcode. Last sale on file: £755,000 in December 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.