6a Ardentinny, Grosvenor Road, St Albans, AL1 3BZ

6a Ardentinny is a two-bedroom detached house in St Albans (AL1 3BZ). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1967-1975 and council tax band C. At 49 m² this is the smallest unit on EPC record across the building (49–65 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (October 2024) shows a C (score 70). When first surveyed in November 2010 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Good and lighting went from Good to Very Good; while wall efficiency dropped from Good to Poor.

Across 2008–2012, sale prices on this property compounded at 2.1% per year. Today's modelled estimate of £313,000 is 31.8% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£450/sq ft) was about 53.2% above the typical sold price in the postcode. Last sold in November 2012, so it's been off the market for around 14 years. At 49 m² it's 15.5% smaller than the typical home in the postcode (58 m² median across 10 EPCs). One historical planning record sits against the property in 2007.