14 Margaretta Close, Clenchwarton, King's Lynn, PE34 4BX

14 Margaretta Close is a four-bedroom detached house in King's Lynn (PE34 4BX). It has a recorded floor area of 120 m² (around 1292 sq ft) and construction records dating it to 1930-1949. Tenure is freehold. The latest certificate (October 2015) shows a C (score 80), near the top of the C band. When first surveyed in April 2013 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Good to Very Good, roof efficiency went from Poor to Good and window efficiency went from Average to Very Good; while hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to A (score 92), a 2-band jump. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from October 2015, so improvements made since then won't be reflected. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.

At 120 m² it's 23% larger than the typical home in the postcode (98 m² median across 14 EPCs). Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). On the market in May 2016 and unlisted since — roughly 10 years. Today's modelled estimate of £311,000 is 26.9% above the 2016 sale price.