21a, High Street, Epworth, Doncaster, DN9 1EP

21a is a mid-terrace house in Epworth, Doncaster, Doncaster (DN9 1EP). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (May 2019) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (February 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 76). At 44 m² this is the 3rd smallest of 29 units on EPC record in the building, where floor areas span 36–229 m². The building's EPC ratings span F to C across 29 units on file.

Today's modelled estimate of £128,000 is 53% below the 2015 sale of £272,500, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£575/sq ft) was about 370.7% above the typical sold price in the postcode. At 44 m² it sits well below the postcode median (94 m² across 28 EPCs), making it one of the more compact homes locally. On the market in October 2015 and unlisted since — roughly 11 years.