Klein House, 54 Compton Street, Islington, London, EC1V 0ET

Klein House is a three-bedroom mid-terrace house in Islington, London, London (EC1V 0ET). It has a recorded floor area of 324 m² (around 3488 sq ft), construction records dating it to 2003-2006 and council tax band G. Tenure is freehold. The latest certificate (November 2015) shows a C (score 80), near the top of the C band. The rating has held steady at C across 2 certificates since March 2009. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 83). The latest certificate is from November 2015, so improvements made since then won't be reflected. The home occupies a corner plot.

Held since July 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 324 m² the property is well over the postcode median (143 m² across 6 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £3,253,000 sits 116.9% above the 2009 sale of £1,500,000. On a £-per-square-foot basis, the last sale (£430/sq ft) was about 60.4% below the postcode norm. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include new windows, meaningful when judging how the property has evolved.