Bonnington House, Flat 3, Ayley Croft, Enfield, EN1 1XT

Bonnington House is an end-of-terrace house in Enfield (EN1 1XT). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1950-1966 and council tax band A. At 60 m² this is the 19th smallest of 25 units on EPC record in Bonnington House, where floor areas span 33–70 m². The building's EPC ratings span E to B, with this unit at the bottom. The latest certificate (November 2016) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (February 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity.

At 60 m² the property is well over the postcode median (46 m² across 24 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.