Flat 1, 11 Westgate Street, Cardiff, CF10 1DD

Flat 1 is a two-bedroom mid-terrace house in Cardiff (CF10 1DD). It has a recorded floor area of 83 m² (around 893 sq ft) and construction records dating it to before 1900. At 83 m² this is the largest unit on EPC record across the building (54–83 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 (53 versus a best of 70). The latest certificate (February 2018) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it C (September 2009); the latest reading is 2 bands lower. Between certificates, wall efficiency went from Very Poor to Very Good, window efficiency went from Average to Very Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. Main heating runs on electricity: electricity, unspecified tariff.

At 83 m² the property is well over the postcode median (54 m² across 3 EPCs), placing it in the larger end of the local stock. On a £-per-square-foot basis, the last sale (£280/sq ft) was about 18.7% below the postcode norm. Sold July 2018 for £250,000.