1 Ocean Buildings, Bute Crescent, Cardiff, CF10 5AY

1 Ocean Buildings is a one-bedroom mid-terrace house in Cardiff (CF10 5AY). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1900-1929 and council tax band E. At 56 m² this is the smallest unit on EPC record across 1 Ocean Buildings (56–103 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 (61 versus a best of 76). Period features are noted in the property record. The latest certificate (May 2022) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2010. Between certificates, hot-water efficiency went from Very Poor to Average, lighting went from Average to Very Good and main heating went from Very Poor to Average; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 74). Main heating runs on electricity.

It hasn't traded since September 2005, a hold of 21 years that's notably long for the area. At 56 m² it's 27.9% smaller than the typical home in the postcode (78 m² median across 27 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. On a £-per-square-foot basis, the last sale (£265/sq ft) was about 19.6% above the typical sold price in the postcode.