21 Acorn Mill, Mellor Street, Lees, Oldham, OL4 3DH

21 Acorn Mill is a two-bedroom end-of-terrace house in Lees, Oldham, Oldham (OL4 3DH). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (January 2020) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it C (June 2009); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 83), a 2-band jump. Main heating runs on electricity. At 56 m² this is the 2nd smallest of 34 units on EPC record in the building, where floor areas span 54–91 m². The building's EPC ratings span F to C across 34 units on file.

Held since December 2005 — that's 21 years off the open market, well above the local norm. On a £-per-square-foot basis, the last sale (£232/sq ft) was about 29.2% above the typical sold price in the postcode. At 56 m² it's 23.3% smaller than the typical home in the postcode (73 m² median across 33 EPCs).