10 Boswell Court, Boswell Road, Doncaster, DN4 7BH

10 Boswell Court is a two-bedroom detached house in Doncaster (DN4 7BH). It has a recorded floor area of 72 m² (around 780 sq ft), construction records dating it to 1967-1975 and council tax band A. At 72 m² this is the largest unit on EPC record across the building (52–72 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (March 2012) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2008); the latest reading is one band lower. Between certificates, hot-water efficiency went from Poor to Average, lighting went from Very Poor to Good and main heating went from Poor to Average; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to D (score 59). Main heating runs on electricity. The latest certificate is from March 2012, so improvements made since then won't be reflected.

Held since March 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 72 m² it's 29.4% larger than the typical home in the postcode (56 m² median across 12 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Across 2003–2007, sale prices on this property compounded at 3.9% per year. Today's modelled estimate of £109,000 is 22.5% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£114/sq ft) was about 25.6% above the typical sold price in the postcode.