Windsor House, Flat 3, Howardsgate, Welwyn Garden City, AL8 6DJ

Windsor House is an end-of-terrace house in Welwyn Garden City (AL8 6DJ). It has a recorded floor area of 67 m² (around 721 sq ft) and council tax band D. At 67 m² this is the largest unit on EPC record across Windsor House (47–67 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 (52 versus a best of 72). The latest certificate (December 2015) shows an E (score 52), well below the UK norm with real room to improve. Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from December 2015, so improvements made since then won't be reflected.

At 67 m² it's 15.5% larger than the typical home in the postcode (58 m² median across 7 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last changed hands 10 years ago, in February 2016. Today's modelled estimate of £326,000 is 18.6% above the 2016 sale price.