401a, Sheffield Road, Chesterfield, S41 8LS

401a is a one-bedroom mid-terrace house in Chesterfield (S41 8LS). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2003-2006 and council tax band A. The latest certificate (June 2022) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since June 2010. Between certificates, wall efficiency went from Very Poor to Good, hot-water efficiency went from Poor to Average and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 72). Main heating runs on electricity. At 47 m² this is the 7th 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.

Held since March 1998 — that's 28 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 £119,000 sits 164.4% above the 1998 sale of £45,000. On a £-per-square-foot basis, the last sale (£89/sq ft) was about 46.1% above the typical sold price in the postcode. One historical planning record sits against the property in 2021.