1 Alderney House, Ferry Court, Cardiff, CF11 0JT

1 Alderney House is a two-bedroom mid-terrace house in Cardiff (CF11 0JT). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 2003-2006 and council tax band E. There is a swimming pool on the plot, uncommon for the area. At 58 m² this is the 4th smallest of 6 units on EPC record in 1 Alderney House, where floor areas span 42–74 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 (63 versus a best of 84). The latest certificate (August 2021) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2011. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Poor to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 74). Main heating runs on electricity.

Today's modelled estimate of £173,000 is 26.4% below the 2007 sale of £235,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£376/sq ft) was about 39.7% above the typical sold price in the postcode. It hasn't traded since October 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs).