3c, Cooper Avenue, Waltham Forest, London, E17 5PN

3c is a one-bedroom mid-terrace house in Waltham Forest, London, London (E17 5PN). It has a recorded floor area of 44 m² (around 474 sq ft) and construction records dating it to 1930-1949. The latest certificate (April 2015) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2011. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Average to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would push it to C (score 77). The latest certificate is from April 2015, so improvements made since then won't be reflected. At 44 m² this is the 3rd smallest of 39 units on EPC record in the building, where floor areas span 35–129 m². The building's EPC ratings span E to B across 39 units on file.

At 44 m² it sits well below the postcode median (74 m² across 38 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 74% of similar EPCs). Across 2007–2018, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £271,000 is 35.5% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£422/sq ft) was about 32.5% above the typical sold price in the postcode. Sold June 2018 for £200,000.