20a, Sexton Close, Holt Drive, Colchester, CO2 0DW

20a is a semi-detached house in Colchester (CO2 0DW). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (November 2017) returns a high B (score 86), putting the home a stone's throw from an A rating. When first surveyed in November 2009 the rating was D, the property has climbed 2 bands since. Between certificates, lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

Untraded for 30 years, with the last transfer in October 1996. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £330,000 sits 340% above the 1996 sale of £75,000. On a £-per-square-foot basis, the last sale (£114/sq ft) was about 45% below the postcode norm. At 61 m² it's 27.1% larger than the typical home in the postcode (48 m² median across 25 EPCs). Its energy rating outperforms most of the postcode (better than 80% of similar EPCs).