Highlawn Hall, Flat 14, Sudbury Hill, Harrow, HA1 3NA

Highlawn Hall is a three-bedroom detached house in Harrow (HA1 3NA). It has a recorded floor area of 108 m² (around 1160 sq ft), construction records dating it to 1976-1982 and council tax band G. At 108 m² this is the 10th smallest of 11 units on EPC record in Highlawn Hall, where floor areas span 17–110 m². The building's EPC ratings span E to B, with this unit at the bottom. On EPC score it ranks last in the building (53 versus a best of 83). Other recorded features include a balcony. The latest certificate (June 2010) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 79), a 2-band jump. The latest certificate is from June 2010, so improvements made since then won't be reflected.

It hasn't traded since July 1999, a hold of 27 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £746,000 sits 113.1% above the 1999 sale of £350,000. At 108 m² it's 18.8% larger than the typical home in the postcode (91 m² median across 18 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs).