Bonnington House, Flat 52, Ayley Croft, Enfield, EN1 1XU

Bonnington House is a two-bedroom semi-detached house in Enfield (EN1 1XU). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (December 2018) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in December 2008 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Poor, lighting went from Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 73). Main heating runs on electricity. At 55 m² this is the 21st smallest of 33 units on EPC record in Bonnington House, where floor areas span 32–66 m². The building's EPC ratings span F to C across 33 units on file.

Across 1995–2014, sale prices on this property compounded at 10.2% per year. Today's modelled estimate of £242,000 sits 66.9% above the 2014 sale of £145,000. On a £-per-square-foot basis, the last sale (£245/sq ft) was about 53.2% above the typical sold price in the postcode. At 55 m² it's 20.9% larger than the typical home in the postcode (46 m² median across 32 EPCs). 12 years since the last transfer (May 2014).