20 Rock Farm Lane, Sandford On Thames, Oxford, OX4 4YL

20 Rock Farm Lane is a detached house in Sandford-On-Thames, Oxford, Oxford (OX4 4YL). It has a recorded floor area of 158 m² (around 1701 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (April 2016) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (June 2015); the latest reading is one band lower. Between certificates, hot-water efficiency went from Average to Good; while wall efficiency dropped from Good to Poor. The recommended improvements would lift it to C (score 80), a 2-band jump. The latest certificate is from April 2016, so improvements made since then won't be reflected.

Held since November 2001 — that's 25 years off the open market, well above the local norm. Across 1995–2001, sale prices on this property compounded at 11.1% per year. Today's modelled estimate of £715,000 sits 160% above the 2001 sale of £275,000. On a £-per-square-foot basis, the last sale (£162/sq ft) was about 29.3% below the postcode norm. At 158 m² it's 22% larger than the typical home in the postcode (130 m² median across 10 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).