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

1 The Canal House is a detached house in Cardiff (CF10 5HF). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 2003-2006 and council tax band C. At 33 m² this is the smallest unit on EPC record across the building (33–67 m²). The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (57 versus a best of 81). The latest certificate (May 2018) shows a D (score 57), a step below the typical UK home. The recommended improvements would push it to C (score 78). Main heating runs on electricity.

At 33 m² it sits well below the postcode median (65 m² across 7 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Sold September 2020 for £84,750. Across the public record there are 4 sales, relatively high churn for a single property. Across 2008–2020, sale prices on this property compounded at 0.8% per year. Today's modelled estimate of £118,000 is 39.2% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£239/sq ft) was about 56.3% above the typical sold price in the postcode.