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

13 Caldey Island House is an end-of-terrace house in Cardiff (CF11 0JN). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 2003-2006 and council tax band E. The latest certificate (March 2015) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (June 2009); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 84). Main heating runs on electricity. The latest certificate is from March 2015, so improvements made since then won't be reflected. At 64 m² this is the 50th 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 across 86 units on file.

Today's modelled estimate of £195,000 is 11.4% below the 2006 sale of £220,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. Held since June 2006 — that's 20 years off the open market, well above the local norm.