1a, Helmet Row, Islington, London, EC1V 3QJ

1a is a two-bedroom mid-terrace house in Islington, London, London (EC1V 3QJ). It has a recorded floor area of 155 m² (around 1668 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (July 2019) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in October 2010 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 79). The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.

Held since April 2011 — that's 15 years off the open market, well above the local norm. Today's modelled estimate of £1,766,000 sits 60.5% above the 2011 sale of £1,100,000. 4 planning records sit against the property, 2 approved, 0 refused. The record references listed-building consent, which constrain future alterations.