Altolusso, Flat 113, Bute Terrace, Cardiff, CF10 2FG

Altolusso is a two-bedroom mid-terrace house in Cardiff (CF10 2FG). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1996-2002 and council tax band F. At 51 m² this is the 13th smallest of 84 units on EPC record in Altolusso, where floor areas span 46–124 m². The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (68 versus a best of 85). The latest certificate (July 2016) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2009); the latest reading is one band lower. Between certificates, window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. Main heating runs on electricity.

At 51 m² it's 20.3% smaller than the typical home in the postcode (64 m² median across 83 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. On a £-per-square-foot basis, the last sale (£319/sq ft) was about 37.3% above the typical sold price in the postcode. Last changed hands 8 years ago, in May 2018.