17 Hartland House, Ferry Court, Cardiff, CF11 0JE

17 Hartland House is a mid-terrace house in Cardiff (CF11 0JE). It has a recorded floor area of 22 m² (around 237 sq ft), construction records dating it to 2007 onwards and council tax band C. At 22 m² this is the smallest unit on EPC record across the building (22–79 m²). The building's EPC ratings span D to B across 55 units on file. The latest certificate (September 2019) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (August 2009); the latest reading is one band lower. Between certificates, lighting went from Poor to Good; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to B (score 86). Main heating runs on electricity.

Across 2004–2017, sale prices on this property compounded at -0.9% per year. Today's modelled estimate of £133,000 sits 59.3% above the 2017 sale of £83,500. On a £-per-square-foot basis, the last sale (£353/sq ft) was about 55.8% above the typical sold price in the postcode. At 22 m² it sits well below the postcode median (62 m² across 54 EPCs), making it one of the more compact homes locally. Last changed hands 9 years ago, in August 2017.