2 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ

2 St Stephens Mansions is a one-bedroom mid-terrace house in Cardiff (CF10 5LQ). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1996-2002 and council tax band D. At 52 m² this is the smallest unit on EPC record across 2 St Stephens Mansions (52–82 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (63 versus a best of 79). The latest certificate (June 2020) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in June 2010 the rating was E, the property has climbed 1 band since. Between certificates, lighting went from Average to Very Good. The recommended improvements would push it to C (score 79). Main heating runs on electricity.

Held since June 2004 — that's 22 years off the open market, well above the local norm. At 52 m² it's 28.8% smaller than the typical home in the postcode (73 m² median across 63 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). Today's modelled estimate of £140,000 is 27.3% above the 2004 sale price.