Ash House, Flat 1, Athelstan Road, Winchester, SO23 7GA

Ash House is a detached house in Winchester (SO23 7GA). It has a recorded floor area of 70 m² (around 753 sq ft), construction records dating it to 2003-2006 and council tax band C. At 70 m² this is the 3rd smallest of 4 units on EPC record in Ash House, where floor areas span 65–70 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (58 versus a best of 70). The latest certificate (February 2015) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 2 certificates since June 2012. Between certificates, window efficiency went from Average to Good; while lighting dropped from Good to Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity. The latest certificate is from February 2015, so improvements made since then won't be reflected.

At 70 m² it's 16.8% smaller than the typical home in the postcode (84 m² median across 43 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 72% of similar EPCs). Across 2005–2017, sale prices on this property compounded at 2.3% per year. On a £-per-square-foot basis, the last sale (£392/sq ft) was about 25.9% above the typical sold price in the postcode. Last sold in January 2017, so it's been off the market for around 9 years.