1a, Claremont Crescent, Rumney, Cardiff, CF3 4LS

1a is a four-bedroom detached house in Rumney, Cardiff, Cardiff (CF3 4LS). It has a recorded floor area of 134 m² (around 1442 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (May 2022) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in October 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Good, hot-water efficiency went from Average to Good and lighting went from Very Poor to Good; while wall efficiency dropped from Good to Average and roof efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 79).

It hasn't traded since November 2010, a hold of 16 years that's notably long for the area. At 134 m² the property is well over the postcode median (91 m² across 14 EPCs), placing it in the larger end of the local stock. Across 2003–2010, sale prices on this property compounded at -3.8% per year. Today's modelled estimate of £308,000 sits 136.9% above the 2010 sale of £130,000. On a £-per-square-foot basis, the last sale (£90/sq ft) was about 47.2% below the postcode norm.