1a, Firmstone Road, Winchester, SO23 0NZ

1a is a one-bedroom detached house in Winchester (SO23 0NZ). It has a recorded floor area of 31 m² (around 329 sq ft), construction records dating it to 2003-2006 and council tax band B. The latest certificate (March 2009) returns a B (score 84), comfortably above the UK average. The latest certificate is from March 2009, so improvements made since then won't be reflected. At 31 m² this is the 2nd smallest of 25 units on EPC record in the building, where floor areas span 28–83 m². The building's EPC ratings span D to B, with this unit at the top. On EPC score it ranks first in the building (84 versus a worst of 63).

Untraded for 19 years, with the last transfer in July 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 31 m² it's 28.8% smaller than the typical home in the postcode (43 m² median across 24 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. One planning record on file: new windows approved in 2007. Past consents include new windows, meaningful when judging how the property has evolved. Today's modelled estimate of £171,000 is 26.7% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£410/sq ft) was about 161.6% above the typical sold price in the postcode.