1 Tan Y Bryn, Lon Llainffynnon, Groeslon, Caernarfon, LL54 7TP

1 Tan Y Bryn is a two-bedroom semi-detached house in Groeslon, Caernarfon, Caernarfon (LL54 7TP). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (August 2013) shows a G (score 12), near the bottom of the EPC scale. The rating has held steady at G across 2 certificates since June 2010. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Very Good; while roof efficiency dropped from Average to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to E (score 39), a 2-band jump. Main heating runs on bottled lpg. The latest certificate is from August 2013, so improvements made since then won't be reflected. Other recorded features include a loft.

Today's modelled estimate of £163,000 sits 69.8% above the 2011 sale of £96,000. Last sold in May 2011, so it's been off the market for around 15 years.