217a, Skellow Road, Skellow, Doncaster, DN6 8JH

217a is a mid-terrace house in Skellow, Doncaster, Doncaster (DN6 8JH). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (September 2019) shows an E (score 52), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since July 2009. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Average and lighting went from Poor to Very Good; while roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 55). At 52 m² this is the 4th smallest of 13 units on EPC record in the building, where floor areas span 25–128 m². The building's EPC ratings span F to C across 13 units on file.

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. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs). Across 1998–2009, sale prices on this property compounded at 10.2% per year. On a £-per-square-foot basis, the last sale (£232/sq ft) was about 59.5% above the typical sold price in the postcode.