3 Britannia Apartments, Phoebe Road, Copper Quarter, Pentrechwyth, Swansea, SA1 7FG

3 Britannia Apartments is a one-bedroom end-of-terrace house in Pentrechwyth, Swansea, Swansea (SA1 7FG). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to 2007 onwards and council tax band C. At 35 m² this is the smallest unit on EPC record across 3 Britannia Apartments (35–63 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 (68 versus a best of 78). The latest certificate (September 2020) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (March 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Good to Very Good and lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Main heating runs on electricity.

Today's modelled estimate of £106,000 is 10.2% below the 2007 sale of £118,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£313/sq ft) was about 34.2% above the typical sold price in the postcode. Untraded for 19 years, with the last transfer in September 2007. 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 85% of similar EPCs).