18 Copperfield Crescent, Leeds, LS9 0BS

18 Copperfield Crescent is a three-bedroom mid-terrace house in Leeds (LS9 0BS). It has a recorded floor area of 61 m² (around 657 sq ft) and construction records dating it to 1900-1929. The latest certificate (May 2016) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since February 2009. Between certificates, roof efficiency went from Average to Very Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would lift it to B (score 89), a 2-band jump. The latest certificate is from May 2016, so improvements made since then won't be reflected.

Held since August 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £126,000 is 49.1% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£129/sq ft) was about 80.7% above the typical sold price in the postcode.