16 Wellfield Close, Hatfield, AL10 0BU

16 Wellfield Close is a two-bedroom semi-detached house in Hatfield (AL10 0BU). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (November 2018) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2008); the latest reading is one band lower. Between certificates, wall efficiency went from Poor to Average and window efficiency went from Average to Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 71). At 60 m² this is the 30th smallest of 31 units on EPC record in the building, where floor areas span 25–60 m². The building's EPC ratings span E to C across 31 units on file.

It hasn't traded since February 1998, a hold of 28 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. At 60 m² it's 27.7% larger than the typical home in the postcode (47 m² median across 30 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £234,000 sits 403.2% above the 1998 sale of £46,500. On a £-per-square-foot basis, the last sale (£72/sq ft) was about 81.5% below the postcode norm.