4 The Canal House, Harrowby Place, Cardiff, CF10 5HF

4 The Canal House is a two-bedroom semi-detached house in Cardiff (CF10 5HF). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (October 2020) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since June 2010. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Very Poor. The recommended improvements would push it to B (score 83). Main heating runs on electricity. At 67 m² this is the 7th smallest of 8 units on EPC record in the building, where floor areas span 33–67 m². The building's EPC ratings span D to B across 8 units on file.

Untraded for 18 years, with the last transfer in October 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £144,000 sits 57% above the 2008 sale of £91,740. On a £-per-square-foot basis, the last sale (£127/sq ft) was about 19.4% below the postcode norm.