11 Clarence Embankment, Cardiff, CF10 5GR

11 Clarence Embankment is a two-bedroom end-of-terrace house in Cardiff (CF10 5GR). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to 1900-1929 and council tax band C. At 35 m² this is the smallest unit on EPC record across the building (35–139 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (February 2020) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it C (October 2008); the latest reading is 2 bands lower. Between certificates, window efficiency went from Average to Good and lighting went from Average to Good; while wall efficiency dropped from Good to Very Poor and main heating dropped from Average to Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on electricity.

Untraded for 24 years, with the last transfer in July 2002. At 35 m² it sits well below the postcode median (100 m² across 28 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs). Today's modelled estimate of £184,000 is 47.3% above the 2002 sale price. On a £-per-square-foot basis, the last sale (£332/sq ft) was about 89% above the typical sold price in the postcode.