1 Eddystone House, Ferry Court, Cardiff, CF11 0AU

1 Eddystone House is a one-bedroom semi-detached house in Cardiff (CF11 0AU). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 2007 onwards and council tax band D. At 48 m² this is the 2nd smallest of 4 units on EPC record in 1 Eddystone House, where floor areas span 38–68 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (63 versus a best of 77). The latest certificate (July 2020) shows a D (score 63), on the cusp of jumping into the C band. Earlier certificates rated it C (November 2009); the latest reading is one band lower. Between certificates, hot-water efficiency went from Very Poor to Average and lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 78). Main heating runs on electricity.

At 48 m² it's 23.8% smaller than the typical home in the postcode (63 m² median across 34 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold October 2020 for £135,250. Across the public record there are 4 sales, relatively high churn for a single property. Across 2009–2020, sale prices on this property compounded at 1.1% per year. Today's modelled estimate of £154,000 is 13.9% above the 2020 sale price.