11 Crispe House, Bryan Street, Islington, London, N1 0UB

11 Crispe House is a one-bedroom end-of-terrace house in Islington, London, London (N1 0UB). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 1930-1949 and council tax band C. At 47 m² this is the 3rd smallest of 25 units on EPC record in the building, where floor areas span 44–75 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (64 versus a best of 78). Other recorded features include a balcony. The latest certificate (August 2018) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 76).

Held since January 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 47 m² it's 28.2% smaller than the typical home in the postcode (66 m² median across 24 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £367,000 sits 83.5% above the 2007 sale of £199,999. On a £-per-square-foot basis, the last sale (£395/sq ft) was about 33.7% above the typical sold price in the postcode.