Flat 1, 507 Cowbridge Road East, Cardiff, CF5 1BB

Flat 1 is a mid-terrace house in Cardiff (CF5 1BB). It has a recorded floor area of 27 m² (around 291 sq ft), construction records dating it to before 1900 and council tax band C. At 27 m² this is the smallest unit on EPC record across the building (27–47 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (46 versus a best of 79). The latest certificate (June 2017) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it C (June 2012); the latest reading is 2 bands lower. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Average to Very 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 76), a 2-band jump. Main heating runs on electricity.

At 27 m² it sits well below the postcode median (46 m² across 20 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and an annexe, meaningful when judging how the property has evolved.