Flat 1, 2 Borough Street, Castle Donington, Derby, DE74 2LA

Flat 1 is a mid-terrace house in Castle Donington, Derby, Derby (DE74 2LA). It has a recorded floor area of 41 m² (around 441 sq ft) and construction records dating it to before 1900. At 41 m² this is the smallest unit on EPC record across the building (41–152 m²). The building's EPC ratings span E to C across 8 units on file. The latest certificate (November 2021) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since February 2013. Between certificates, roof efficiency dropped from Good to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 74).

Untraded for 16 years, with the last transfer in January 2010. Today's modelled estimate of £126,000 sits 90.6% above the 2010 sale of £66,095. On a £-per-square-foot basis, the last sale (£150/sq ft) was about 86.4% below the postcode norm. At 41 m² it sits well below the postcode median (70 m² across 32 EPCs), making it one of the more compact homes locally.