26 Caldey Island House, Ferry Court, Cardiff, CF11 0JN

26 Caldey Island House is a one-bedroom mid-terrace house in Cardiff (CF11 0JN). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (November 2023) returns a high B (score 85), putting the home a stone's throw from an A rating. The rating has held steady at B across 2 certificates since October 2008. Between certificates, lighting went from Poor to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. Main heating runs on electricity. At 41 m² this is the 10th smallest of 86 units on EPC record in the building, where floor areas span 36–87 m². The building's EPC ratings span E to B, with this unit at the top.

At 41 m² it sits well below the postcode median (60 m² across 85 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Across 2006–2024, sale prices on this property compounded at -2.3% per year. Today's modelled estimate of £123,000 is 36.7% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£204/sq ft) was about 32.4% below the postcode norm. Last sale on file: £90,000 in January 2024.