10 Ardentinny, Grosvenor Road, St Albans, AL1 3BZ

10 Ardentinny is a two-bedroom detached house in St Albans (AL1 3BZ). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to 1950-1966 and council tax band C. At 59 m² this is the 8th smallest of 11 units on EPC record in the building, where floor areas span 49–65 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 (54 versus a best of 79). The latest certificate (April 2022) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2010. Between certificates, wall efficiency went from Poor to Average. The recommended improvements would lift it to C (score 76), a 2-band jump.

Held since February 1997 — that's 29 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £310,000 sits 552.6% above the 1997 sale of £47,500. On a £-per-square-foot basis, the last sale (£75/sq ft) was about 80.8% below the postcode norm. One historical planning record sits against the property in 2007.