9 Heol Y Dderwen, Llandysul, SA44 4RW

9 Heol Y Dderwen is a semi-detached house in Llandysul (SA44 4RW). It has a recorded floor area of 121 m² (around 1302 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (October 2014) shows a G (score 17), near the bottom of the EPC scale. Earlier certificates rated it D (December 2013); the latest reading is 3 bands lower. Between certificates, hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 78), a 4-band jump. Main heating runs on to be used only when there is no heating/hot. The latest certificate is from October 2014, so improvements made since then won't be reflected.

At 121 m² the property is well over the postcode median (79 m² across 17 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £174,000 is 37% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£98/sq ft) was about 23.8% below the postcode norm. On the market in July 2014 and unlisted since — roughly 12 years.