18 Petty Lane, Derry Hill, Calne, SN11 9QY

18 Petty Lane is a four-bedroom detached house in Derry Hill, Calne, Calne (SN11 9QY). It has a recorded floor area of 149 m² (around 1604 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (January 2016) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in November 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, hot-water efficiency went from Very Poor to Good and lighting went from Poor to Good. The recommended improvements would push it to C (score 75). The latest certificate is from January 2016, so improvements made since then won't be reflected. The home occupies a cul-de-sac position.

One planning record on file: an extension approved in 2005. Past consents include an extension and a porch, meaningful when judging how the property has evolved. At 149 m² it's 26.3% larger than the typical home in the postcode (118 m² median across 23 EPCs). Across 1999–2016, sale prices on this property compounded at 6.7% per year. Today's modelled estimate of £581,000 is 29.1% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£281/sq ft) was about 40.7% above the typical sold price in the postcode. On the market in June 2016 and unlisted since — roughly 10 years.