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

27 Alderney House is a two-bedroom mid-terrace house in Cardiff (CF11 0JT). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 2007 onwards and council tax band E. There is a swimming pool on the plot, uncommon for the area. Other recorded features include a balcony. At 49 m² this is the 21st smallest of 56 units on EPC record in the building, where floor areas span 40–92 m². The building's EPC ratings span D to B, with this unit at the top. The latest certificate (August 2019) returns a B (score 84), comfortably above the UK average. When first surveyed in April 2009 the rating was C, the property has climbed 1 band since. Between certificates, lighting went from Poor to Very Good. Main heating runs on electricity.

Across 2007–2007, sale prices on this property compounded at 4.3% per year. Today's modelled estimate of £161,000 is 32.9% below the 2007 sale of £240,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£455/sq ft) was about 69% above the typical sold price in the postcode. It hasn't traded since August 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. Its energy rating outperforms most of the postcode (better than 73% of similar EPCs).