7 Cob Lane Close, Digswell, Welwyn, AL6 0DD

7 Cob Lane Close is a five-bedroom detached house in Digswell, Welwyn, Welwyn (AL6 0DD). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (February 2018) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2008. Between certificates, hot-water efficiency went from Average to Good and main heating went from Average to Good; while window efficiency dropped from Good to Average and lighting dropped from Very Good to Poor. The recommended improvements would push it to C (score 80).

It hasn't traded since September 1999, a hold of 27 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. Today's modelled estimate of £761,000 sits 201.4% above the 1999 sale of £252,500. On a £-per-square-foot basis, the last sale (£189/sq ft) was about 34.7% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs).