403a, Sheffield Road, Chesterfield, S41 8LS

403a is a one-bedroom mid-terrace house in Chesterfield (S41 8LS). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1900-1929 and council tax band A. At 64 m² this is the 16th smallest of 17 units on EPC record in the building, where floor areas span 23–74 m². The building's EPC ratings span E to C across 17 units on file. The latest certificate (June 2014) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 69). The latest certificate is from June 2014, so improvements made since then won't be reflected.

Held since December 2000 — that's 25 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £113,000 sits 201.3% above the 2000 sale of £37,500. On a £-per-square-foot basis, the last sale (£54/sq ft) was about 38.8% below the postcode norm. At 64 m² it's 29.3% larger than the typical home in the postcode (50 m² median across 16 EPCs).