5b, The Crescent, York, YO24 1AW

5b is a semi-detached house in York (YO24 1AW). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (June 2021) shows an F (score 27), near the bottom of the EPC scale. The rating has held steady at F across 4 certificates since November 2011. Between certificates, lighting went from Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would push it to E (score 45). Main heating runs on electricity. At 58 m² this is the 17th smallest of 36 units on EPC record in the building, where floor areas span 29–263 m². The building's EPC ratings span F to B, with this unit at the bottom. On EPC score it ranks last in the building (27 versus a best of 91).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. On a £-per-square-foot basis, the last sale (£561/sq ft) was about 92.3% above the typical sold price in the postcode. On the market in April 2014 and unlisted since — roughly 12 years.