109 Heol Isaf, Radyr, Cardiff, CF15 8DW

109 Heol Isaf is a four-bedroom semi-detached house in Radyr, Cardiff, Cardiff (CF15 8DW). It has a recorded floor area of 132 m² (around 1421 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (July 2021) shows a D (score 58), a step below the typical UK home. When first surveyed in September 2013 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Average and hot-water efficiency went from Average to Good; while window efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Period features are noted in the property record.

Across 2014–2022, sale prices on this property compounded at 5.5% per year. Today's modelled estimate of £629,000 is 14.2% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£388/sq ft) was about 82.5% above the typical sold price in the postcode. At 132 m² it's 15.9% smaller than the typical home in the postcode (157 m² median across 17 EPCs). Last sale on file: £551,000 in April 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.