20 Collingwood Court, Washington, NE37 3EB

20 Collingwood Court is a one-bedroom mid-terrace house in Washington (NE37 3EB). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1967-1975 and council tax band A. At 68 m² this is the 21st smallest of 40 units on EPC record in the building, where floor areas span 32–137 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (December 2016) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since June 2013. Between certificates, wall efficiency went from Poor to Good and lighting went from Very Poor to Good; while hot-water efficiency dropped from Poor to Very Poor and main heating dropped from Good to Average. The recommended improvements would push it to C (score 73).

Today's modelled estimate of £100,000 sits 440.5% above the 2017 sale of £18,500. On a £-per-square-foot basis, the last sale (£25/sq ft) was about 26.8% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs). On the market in March 2017 and unlisted since — roughly 9 years.