77a, Chester Road, Waltham Forest, London, E17 7HP

77a is a one-bedroom end-of-terrace house in Waltham Forest, London, London (E17 7HP). It has a recorded floor area of 40 m² (around 431 sq ft) and construction records dating it to before 1900. The latest certificate (May 2018) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in January 2009 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Very Poor to Good and main heating went from Poor to Good. The recommended improvements would push it to C (score 73).

Held since October 2010 — that's 16 years off the open market, well above the local norm. Today's modelled estimate of £329,000 sits 163.2% above the 2010 sale of £125,000. On a £-per-square-foot basis, the last sale (£290/sq ft) was about 28.6% above the typical sold price in the postcode. At 40 m² it sits well below the postcode median (90 m² across 28 EPCs), making it one of the more compact homes locally.