11a, Canning Crescent, Haringey, London, N22 5SR

11a is a semi-detached house in Haringey, London, London (N22 5SR). It has a recorded floor area of 44 m² (around 474 sq ft) and construction records dating it to 1900-1929. The latest certificate (December 2016) shows a C (score 71). When first surveyed in May 2010 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Poor to Average and hot-water efficiency went from Very Poor to Good; while lighting dropped from Average to Very Poor. At 44 m² this is the 5th smallest of 37 units on EPC record in the building, where floor areas span 30–156 m². The building's EPC ratings span F to B across 37 units on file.

Held since July 2002 — that's 24 years off the open market, well above the local norm. Across the public record there are 4 sales, relatively high churn for a single property. Across 1995–2002, sale prices on this property compounded at 14.4% per year. Today's modelled estimate of £310,000 sits 160.5% above the 2002 sale of £119,000. On a £-per-square-foot basis, the last sale (£251/sq ft) was about 26.2% above the typical sold price in the postcode. At 44 m² it's 20% smaller than the typical home in the postcode (55 m² median across 64 EPCs).