41a, Flat 1, Warbreck Moor, Liverpool, L9 4RW

41a is a mid-terrace house in Liverpool (L9 4RW). It has a recorded floor area of 42 m² (around 452 sq ft) and construction records dating it to 1900-1929. The latest certificate (May 2021) shows an E (score 41), well below the UK norm with real room to improve. When first surveyed in October 2019 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Good to Very Good. The recommended improvements would lift it to C (score 78), a 2-band jump. Main heating runs on electricity. At 42 m² this is the 2nd smallest of 3 units on EPC record in 41a, where floor areas span 41–71 m². The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (41 versus a best of 56).

Held since December 2001 — that's 24 years off the open market, well above the local norm. Today's modelled estimate of £173,000 sits 57.3% above the 2001 sale of £110,000. On a £-per-square-foot basis, the last sale (£243/sq ft) was about 138.1% above the typical sold price in the postcode. At 42 m² it's 19.2% smaller than the typical home in the postcode (52 m² median across 12 EPCs).