Flat 3, 23 Mayfield Grove, Harrogate, HG1 5HD

Flat 3 is a one-bedroom mid-terrace house in Harrogate (HG1 5HD). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to before 1900 and council tax band A. At 44 m² this is the smallest unit on EPC record across the building (44–55 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (42 versus a best of 71). The latest certificate (October 2013) shows an E (score 42), well below the UK norm with real room to improve. Main heating runs on electricity. The latest certificate is from October 2013, so improvements made since then won't be reflected.

Today's modelled estimate of £119,000 sits 65.3% above the 2014 sale of £72,000. On a £-per-square-foot basis, the last sale (£152/sq ft) was about 26.3% below the postcode norm. At 44 m² it's 25.4% smaller than the typical home in the postcode (59 m² median across 63 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). Last sold in May 2014, so it's been off the market for around 12 years.