15 Chiltern Court, Twyford Road, St Albans, AL4 9BN

15 Chiltern Court is a one-bedroom semi-detached house in St Albans (AL4 9BN). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1983-1990 and council tax band C. At 41 m² this is the 5th smallest of 15 units on EPC record in the building, where floor areas span 37–54 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 (45 versus a best of 80). The latest certificate (November 2020) shows an E (score 45), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2012. Between certificates, wall efficiency went from Average to Good and lighting went from Average to Very Good; while roof efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 72), a 2-band jump. Main heating runs on to be used only when there is no heating/hot.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 1998–2015, sale prices on this property compounded at 5.8% per year. Today's modelled estimate of £234,000 is 49.8% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£354/sq ft) was about 22.9% above the typical sold price in the postcode. Last changed hands 11 years ago, in March 2015.