15 St Catherines Court, Maritime Quarter, Swansea, SA1 1SD

15 St Catherines Court is an end-of-terrace house in Maritime Quarter, Swansea, Swansea (SA1 1SD). It has a recorded floor area of 28 m² (around 301 sq ft), construction records dating it to 2007 onwards and council tax band E. At 28 m² this is the smallest unit on EPC record across the building (28–202 m²). The building's EPC ratings span D to B across 66 units on file. The latest certificate (September 2019) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since October 2008. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Average to Very Poor. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

It hasn't traded since June 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. At 28 m² it sits well below the postcode median (76 m² across 65 EPCs), making it one of the more compact homes locally. Across 2006–2007, sale prices on this property compounded at 16% per year. Today's modelled estimate of £193,000 is 10.9% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£577/sq ft) was about 196.5% above the typical sold price in the postcode.