20 Windmill Close, Long Ditton, Surbiton, KT6 5JU

20 Windmill Close is a semi-detached house in Long Ditton, Surbiton, Surbiton (KT6 5JU). It has a recorded floor area of 138 m² (around 1485 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (March 2017) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (April 2009); the latest reading is one band lower. Between certificates, roof efficiency went from Very Poor to Good and window efficiency went from Average to Good; while lighting dropped from Average to Very Poor. The recommended improvements would lift it to B (score 83), a 3-band jump.

At 138 m² the property is well over the postcode median (87 m² across 13 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: an extension approved in 2013. Past consents include an extension, meaningful when judging how the property has evolved. Across 2004–2014, sale prices on this property compounded at 10.1% per year. Today's modelled estimate of £771,000 is 28.5% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£404/sq ft) was about 26.1% below the postcode norm. Last sold in June 2014, so it's been off the market for around 12 years.