Flat 15, 8 Wendover Lodge, Church Street, Welwyn, AL6 9LR

Flat 15 is a semi-detached house in Welwyn (AL6 9LR). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (October 2021) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 3 certificates since July 2009. Between certificates, lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. At 72 m² this is the 2nd smallest of 11 units on EPC record in the building, where floor areas span 70–102 m². On EPC score it ranks last in the building (81 versus a best of 85).

It hasn't traded since March 2011, a hold of 15 years that's notably long for the area. Today's modelled estimate of £347,000 is 38.8% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£323/sq ft) was about 20.9% below the postcode norm. At 72 m² it's 24.6% smaller than the typical home in the postcode (96 m² median across 20 EPCs).