66a, Cole Lane, Ockbrook, Derby, DE72 3RD

66a is a detached house in Ockbrook, Derby, Derby (DE72 3RD). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (September 2016) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in April 2015 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Very Good and window efficiency went from Very Poor to Average. The recommended improvements would lift it to B (score 84), a 2-band jump.

Held since September 1996 — that's 30 years off the open market, well above the local norm. 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 £496,000 sits 470.1% above the 1996 sale of £87,000. On a £-per-square-foot basis, the last sale (£66/sq ft) was about 77.3% below the postcode norm.