17 Duncansby House, Ferry Court, Cardiff, CF11 0AT

17 Duncansby House is a mid-terrace house in Cardiff (CF11 0AT). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 2003-2006 and council tax band C. The latest certificate (July 2020) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (March 2009); the latest reading is one band lower. Between certificates, hot-water efficiency dropped from Average to Poor and lighting dropped from Very Good to Average. The recommended improvements would push it to B (score 84). Main heating runs on electricity. At 37 m² this is the 3rd smallest of 65 units on EPC record in the building, where floor areas span 32–79 m². The building's EPC ratings span E to B across 65 units on file.

At 37 m² it sits well below the postcode median (60 m² across 64 EPCs), making it one of the more compact homes locally. Across 2008–2020, sale prices on this property compounded at -3.2% per year. Today's modelled estimate of £114,000 is 37.3% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£208/sq ft) was about 20% below the postcode norm. Most recent transfer: November 2020 at £83,000.