10 Byron Way, Killay, Swansea, SA2 7EP

10 Byron Way is a semi-detached house in Killay, Swansea, Swansea (SA2 7EP). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (March 2014) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (May 2009); the latest reading is one band lower. Between certificates, wall efficiency dropped from Good to Poor and lighting dropped from Very Good to Very Poor. The recommended improvements would lift it to A (score 93), a 3-band jump. The latest certificate is from March 2014, so improvements made since then won't be reflected.

Untraded for 16 years, with the last transfer in December 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 45 m² it's 21.7% smaller than the typical home in the postcode (58 m² median across 28 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1997–2009, sale prices on this property compounded at 7.2% per year. Today's modelled estimate of £181,000 is 42.6% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£262/sq ft) was about 110.6% above the typical sold price in the postcode.