5 The Malthouse, Caroline Street, Cardiff, CF10 1FP

5 The Malthouse is a two-bedroom mid-terrace house in Cardiff (CF10 1FP). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1900-1929 and council tax band F. At 89 m² this is the 6th smallest of 11 units on EPC record in the building, where floor areas span 44–109 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 (41 versus a best of 79). The latest certificate (December 2020) shows an E (score 41), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2010. Between certificates, lighting went from Average to Good; while wall efficiency dropped from Good to Very Poor and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to D (score 67). Main heating runs on electricity.

Untraded for 23 years, with the last transfer in November 2003. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £249,000 is 41.9% above the 2003 sale price.