11 Astell Court, The Crescent, Frinton On Sea, CO13 9BT

11 Astell Court is a three-bedroom end-of-terrace house in Frinton On Sea (CO13 9BT). It has a recorded floor area of 110 m² (around 1184 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (August 2013) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2012. Between certificates, roof efficiency went from Very Poor to Poor, window efficiency went from Average to Good and lighting went from Very Poor to Average; while wall efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 73). The latest certificate is from August 2013, so improvements made since then won't be reflected. At 110 m² this is the 22nd smallest of 39 units on EPC record in the building, where floor areas span 87–134 m². The building's EPC ratings span F to B across 39 units on file.

Today's modelled estimate of £274,000 sits 50.1% above the 2013 sale of £182,500. On a £-per-square-foot basis, the last sale (£154/sq ft) was about 29.5% below the postcode norm. On the market in September 2013 and unlisted since — roughly 13 years.