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

8 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. The latest certificate (May 2020) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in September 2009 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Good to Very Good and main heating went from Average to Good. The recommended improvements would push it to C (score 72). 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 across 11 units on file.

It hasn't traded since April 1997, a hold of 29 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 £342,000 sits 443.3% above the 1997 sale of £62,950. On a £-per-square-foot basis, the last sale (£99/sq ft) was about 74.5% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). One historical planning record sits against the property in 2007.