6 Ashtree House, Elm Road, High Wycombe, HP12 4TB

6 Ashtree House is a two-bedroom end-of-terrace house in High Wycombe (HP12 4TB). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to 1950-1966 and council tax band B. Tenure is freehold. At 65 m² this is the largest unit on EPC record across the building (58–65 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (September 2014) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2009); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good and main heating went from Average to Good; while wall efficiency dropped from Average to Poor and roof efficiency dropped from Good to Average. The recommended improvements would push it to D (score 68). The latest certificate is from September 2014, so improvements made since then won't be reflected.

Across 2002–2012, sale prices on this property compounded at 1.9% per year. Today's modelled estimate of £243,000 sits 53.3% above the 2012 sale of £158,500. On a £-per-square-foot basis, the last sale (£227/sq ft) was about 35.7% above the typical sold price in the postcode. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs). Last changed hands 14 years ago, in November 2012.