De Havilland House, Amersham Road, High Wycombe, HP13 5AJ

De Havilland House is a five-bedroom detached house in High Wycombe (HP13 5AJ). It has a recorded floor area of 350 m² (around 3767 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (June 2014) returns a B (score 83), comfortably above the UK average. When first surveyed in May 2009 the rating was G, the property has climbed 5 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Average to Very Good and window efficiency went from Very Poor to Good. The latest certificate is from June 2014, so improvements made since then won't be reflected. Other recorded features include a basement. Period features are noted in the property record.

At 350 m² the property is well over the postcode median (230 m² across 8 EPCs), placing it in the larger end of the local stock. 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. Today's modelled estimate of £1,861,000 sits 55.1% above the 2014 sale of £1,200,000. On a £-per-square-foot basis, the last sale (£319/sq ft) was about 23.7% above the typical sold price in the postcode. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. On the market in December 2014 and unlisted since — roughly 11 years.