1a, Roestock Gardens, Colney Heath, St Albans, AL4 0QJ

1a is a four-bedroom semi-detached house in Colney Heath, St. Albans, St Albans (AL4 0QJ). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (March 2014) shows a D (score 55), a step below the typical UK home. When first surveyed in October 2011 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor. The recommended improvements would lift it to B (score 88), a 2-band jump. The latest certificate is from March 2014, so improvements made since then won't be reflected.

It hasn't traded since February 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1996–2007, sale prices on this property compounded at 7.2% per year. Today's modelled estimate of £676,000 sits 90.4% above the 2007 sale of £355,000. On a £-per-square-foot basis, the last sale (£458/sq ft) was about 17.8% above the typical sold price in the postcode. At 72 m² it's 26.5% smaller than the typical home in the postcode (98 m² median across 20 EPCs).