1 Y Grugan, Groeslon, Caernarfon, LL54 7TA

1 Y Grugan is a three-bedroom semi-detached house in Groeslon, Caernarfon, Caernarfon (LL54 7TA). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (January 2022) shows a G (score 16), near the bottom of the EPC scale. Earlier certificates rated it F (November 2018); the latest reading is one band lower. Between certificates, roof efficiency went from Very Poor to Very Good; while wall efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 81), a 5-band jump. Main heating runs on electricity. The home occupies a cul-de-sac position.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £183,000 sits 128.8% above the 2020 sale of £80,000. On a £-per-square-foot basis, the last sale (£103/sq ft) was about 43.2% below the postcode norm. Sold July 2020 for £80,000.