26 St James Mansions, Mount Stuart Square, Cardiff, CF10 5LG

26 St James Mansions is a two-bedroom mid-terrace house in Cardiff (CF10 5LG). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1996-2002 and council tax band E. The latest certificate (January 2023) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since April 2012. Between certificates, hot-water efficiency dropped from Average to Poor and lighting dropped from Poor to Very Poor. Main heating runs on electricity. At 86 m² this is the 23rd smallest of 24 units on EPC record in the building, where floor areas span 39–92 m². The building's EPC ratings span D to B across 24 units on file. Other recorded features include a balcony.

Untraded for 24 years, with the last transfer in July 2002. At 86 m² the property is well over the postcode median (54 m² across 23 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £218,000 is 47.3% above the 2002 sale price. On a £-per-square-foot basis, the last sale (£160/sq ft) was about 15.3% below the postcode norm.