Flat 1, 21 Priory Street, York, YO1 6ET

Flat 1 is an end-of-terrace house in York (YO1 6ET). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1900-1929 and council tax band A. At 24 m² this is the 5th smallest of 6 units on EPC record in the building, where floor areas span 20–25 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (June 2023) shows an E (score 48), well below the UK norm with real room to improve. Earlier certificates rated it D (November 2008); the latest reading is one band lower. Between certificates, lighting went from Average to Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 79), a 2-band jump. Main heating runs on electricity.

It hasn't traded since June 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 24 m² it sits well below the postcode median (52 m² across 24 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs). Across 2009–2009, sale prices on this property compounded at -7.5% per year. Today's modelled estimate of £113,000 is 41.3% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 17.9% below the postcode norm.