20 Cranwell Drive, Grimsby, DN37 9LU

20 Cranwell Drive is a detached house in Grimsby (DN37 9LU). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to 1950-1966 and council tax band A. At 65 m² this is the 11th smallest of 27 units on EPC record in the building, where floor areas span 46–123 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (51 versus a best of 88). The latest certificate (January 2014) shows an E (score 51), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2008); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while roof efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on electricity. The latest certificate is from January 2014, so improvements made since then won't be reflected.

Held since September 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. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £113,000 sits 135.4% above the 2007 sale of £48,000.