Flat 3, 69 The Mount, York, YO24 1AX

Flat 3 is a two-bedroom mid-terrace house in York (YO24 1AX). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to before 1900 and council tax band C. At 66 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 42–74 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (77 versus a worst of 50). The latest certificate (September 2021) shows a C (score 77), near the top of the C band. The rating has held steady at C across 4 certificates since October 2008. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 83).

Held since November 2003 — that's 23 years off the open market, well above the local norm. Today's modelled estimate of £238,000 sits 53.5% above the 2003 sale of £155,000. On a £-per-square-foot basis, the last sale (£218/sq ft) was about 16.5% below the postcode norm. Its energy rating outperforms most of the postcode (better than 81% of similar EPCs).