15 Thornaby Court, Craiglee Drive, Cardiff, CF10 4BD

15 Thornaby Court is a one-bedroom semi-detached house in Cardiff (CF10 4BD). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1991-1995 and council tax band C. At 44 m² this is the 6th smallest of 18 units on EPC record in the building, where floor areas span 31–110 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 (52 versus a best of 77). The latest certificate (March 2022) shows an E (score 52), well below the UK norm with real room to improve. Earlier certificates rated it D (July 2011); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity.

Untraded for 26 years, with the last transfer in July 2000. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 44 m² it sits well below the postcode median (69 m² across 17 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £128,000 sits 120.7% above the 2000 sale of £58,000. On a £-per-square-foot basis, the last sale (£122/sq ft) was about 32.5% below the postcode norm.